NCERT Solutions for Class 7 Mathematics Chapter 12

Important NCERT Questions

Class vii Math Chapter 12 Algebraic Expressions Exercise 12.3

NCERT Books for Session 2022-2023

CBSE Board

Questions No: 10

# Simplify the expression and find its value when a= 5 and b =-3: 2(a²+ab)+3-ab

Share

Given: 2(a²+ab)+3-ab

⇒ 2a²+2ab+3-ab

⇒ 2a²+2ab-ab+3

⇒ 2a²+ab+3

⇒ 2(5)² + (5)(-3)+3 [Putting a = 5 , b = -3 ]

⇒ 2 x 25 – 15 +3

⇒ 50 – 15 + 3

⇒ 38

Class 7 Maths Chapter 12 Exercise 12.3

for more answers vist to:

https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-12/