Question

a+b=7 ab=10 find a-b=?

Answer 1

3 WILL BE CORRECT ANSWER..



HOPE IT HELPS!!!

THANKS

Answer 2

here is your answer
a+b=7
ab=10
a-b=?

so we can put these values in the formula
where
$( {a + b})^{2} = ( { a- b)}^{2} + 4ab$

${7}^{2} = (a - b) {}^{2} + 4 \times 10$

$49 = (a - b) {}^{2} + 40$

now

$49 - 40 = {(a - b})^{2}$

$9 = (a - b ){}^{2}$

$\sqrt{9} = a - b$

so value of a-b =3


hope it helps you