Math, asked by ckp2246, 9 months ago

If a+b = 7 and ab= 12 then a4-64 =

Answers

Answered by ajaykundu7220

1

Step-by-step explanation:

a+b= 7 -- 1st eq

ab= 12

b= 12/a

putting b in 1st equation

a+12/a=7

a^ +12 -7a =0

solving this quadratic equation we get

a=3 or 4

hope it will help you

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Answered by Sk218

2

Step-by-step explanation:

See answer in above picture

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