Home/ Evaraj/Answers
  1. Asked: In:

    Find and correct the errors in the following mathematical statement: (y-3)² =y² – 9

    Best Answer
    Evaraj

    L.H.S. = (y-3)² = y²-2xyx3+(3)² [∵ (a-b)² = a²-2ab+b²] = y²-6y+9 ≠ R.H.S. Hence, the correct statements is (y-3)² = y²-6y+9. Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    L.H.S. = (y-3)² = y²-2xyx3+(3)² [∵ (a-b)² = a²-2ab+b²]
    = y²-6y+9 ≠ R.H.S.
    Hence, the correct statements is (y-3)² = y²-6y+9.

    Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    See less
    • 5
  2. Asked: In:

    Find and correct the errors in the following mathematical statements: Substituting x = -3 in: x² + 5x + 4 gives (-3) ² +5(-3) +4=9+2+4=15

    Best Answer
    Evaraj

    L.H.S. = x² + 5x + 4 Putting x = -3 in given expression, = (-3)²+5(-3)+4=9(-3)²+5(-3)+4=9-15+4=-2 Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    L.H.S. = x² + 5x + 4
    Putting x = -3 in given expression,
    = (-3)²+5(-3)+4=9(-3)²+5(-3)+4=9-15+4=-2

    Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    See less
    • 4
  3. Asked: In:

    Find and correct the errors in the following mathematical statement: (3x+2)² = 3x²+6x+4

    Best Answer
    Evaraj

    L.H.S. = (3x+2)² = (3x²)+2X3xX2+(2)² = 9x²+12x+4 ≠ R.H.S. Hence, the correct mathematical statements is (3x+2)² =9x²+12x+4. Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    L.H.S. = (3x+2)² = (3x²)+2X3xX2+(2)² = 9x²+12x+4 ≠ R.H.S.
    Hence, the correct mathematical statements is (3x+2)² =9x²+12x+4.

    Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    See less
    • 5
  4. Asked: In:

    Find and correct the errors in the following mathematical statement: (2x)² + 5x = 4x+5x =9x

    Best Answer
    Evaraj

    (2x)² + 5x = 4x+5x =9x L.H.S. = (2x)² + 5x = 4x²+5x ≠ R.H.S. Hence, the correct mathematical statements is (2x)² + 5x = 4x²+5x. Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    (2x)² + 5x = 4x+5x =9x
    L.H.S. = (2x)² + 5x = 4x²+5x ≠ R.H.S.
    Hence, the correct mathematical statements is (2x)² + 5x = 4x²+5x.

    Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    See less
    • 5
  6. Asked: In:

    Find and correct the errors in the following mathematical statement: (2x)² +4(2x) +7 =2x²+8x+7

    Best Answer
    Evaraj

    L.H.S. = (2x)² +4(2x)+7 = 4x²+8x+7 ≠ R.H.S. Hence, the correct mathematical statements is (2x)² +4(2x)+7=4x²+8x+7. Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    L.H.S. = (2x)² +4(2x)+7 = 4x²+8x+7 ≠ R.H.S.
    Hence, the correct mathematical statements is (2x)² +4(2x)+7=4x²+8x+7.

    Class 8 Maths Chapter 11 Exercise 14.4 Solution in Video

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-14/

    See less
    • 5