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

mark me as brainlist

Answered by Sk218

2

Step-by-step explanation:

See answer in above picture

Attachments:

Previous Question

Next Question

Similar questions

Math, 4 months ago

True or false 1. 14 added to the difference of 10 and 3 = 12 _______ 2. The L.C.M of 3 and 5 is 15 ________.

Hindi, 4 months ago

Please answer to these question please ...

Math, 4 months ago

the value of x in the equadion x-2=8 is...

Computer Science, 9 months ago

____ can only be read. It is a _____ memory device.

Chemistry, 9 months ago

what is the oxidation number of cr in k2cr2o7...

Physics, 1 year ago

A proton, a neutron, an electron and an α-particle have same energy. Then, their de-Broglie wavelengths compare as(a) $\lambda_{p}=\lambda_{n}\ \textgreater \ \lambda_{e}\ \textgreater \ \lambda_{\alpha}$ (b) $\lambda_{\alpha}\ \textless \ \lambda_{p}=\lambda_{n}\ \textgreater \ \lambda_{e}$ (c) [tex]\lambda_{e}\ \textless \ \lambda_{p}=\lambda_{n}\ \textgreater \...

Math, 1 year ago

What is the difference between 0 digree and 360 digree?

Math, 1 year ago

What statistical test to use for yes or no questions?