Question

simplify 2(a^2-ab)-4+5ab and find value if a=5 ,b=-5​
I mark a briallant answer

Answer 1

Step-by-step explanation:

Given: 2(a

2

+ab)+3−ab

⇒2a

2

+2ab+3−ab

⇒2a

2

+2ab−ab+3

⇒2a

2

+ab+3

⇒2(5)

2

+(5)(−3)+3 [Putting a=5,b=−3]

⇒2×25−15+3

⇒50−15+3

⇒38.

Answer 2

I think 116

Step-by-step explanation:

2(5²-5×-5)-4+5×5-5

2(25+25)-4+25-5

2×50-4+20

100+20-4

116