Question

if a-b =7, ab=8 find the value of a2b2
plz tell step by step explanation ​

Answer 1

Step-by-step explanation:

We have,

a−b=7 …… (1)

ab=8 …….. (2)

On squaring both sides of equation (1), we get

(a−b)

2

=(7)

2

a

2

+b

2

−2ab=49

From equation (2), we get

a

2

+b

2

−2×8=49

a

2

+b

2

−16=49

a

2

+b

2

=49+16

a

2

+b

2

=65We have,

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