Question

If a+b=7,ab=12 find (a2-ab+b2)

Answer 1

if a+b=7, than if a=4 and b=3, than when added we get 7 and when multiplied we get 12
so,
=(4)2-(4)(3)+(3)2
=8(-12+6)
=8-6
=2

Answer 2

Answer:

Explanation:

if a+b=7, than if a=4 and b=3, than when added we get 7 and when multiplied we get 12

so,

=(4)2-(4)(3)+(3)2

=8(-12+6)

=8-6

=2