Question

If a+b = 7 and ab= 12. Find
the value of a²-ab+b²​

Answer 1

Step-by-step explanation:

this is the answer of question

Answer 2

a+b=7

a=7-b

ab=12

(7-b)b=12

7b-b^2=12

b^2-7b+12=0

by splitting the middle term,

b=3,4

if b=3

a=4

and vice-versa

so, a^2-ab+b^2=4^2-(4×3)+3^2=16-12+9=13

ur answer is 13...

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