Math, asked by shamsnaziya36, 3 months ago

4ab, if a+b= 9 and a-b= 5

Answers

Answered by MrNobody78

11

a+b=9. (1)

a-b=5 (i)

adding eq_1 and 2

a+b+a-b=14

2a=14

a=7

b=9-a=9-7=2

so 4ab=4x7x2=56.

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