Question

7. If a - b = 5, a? + b2 = 49, find the value of ab.​

Answer 1

Answer:

if ,a-b = 5______( 1 )

and a2 + b2 = 49 _________(2 )

according to equation one

a-B = 5

a = 5+B

then putting value of a in equation 2.

( 5+B)2 + b2 = 49

25+B2+10B +B2 = 49

2B2 + 10B - 24 =0

slove this quadratic equation

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