Question

a^2 -ab + b^2 when ab= 18 and a+b = 10.
picture of answer is given just explain why it is that..​

Answer 1

Answer:

answer for the given problem is given

Answer 2

Answer:

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Step-by-step explanation:

[we can write a^2+b^2 as( a+b)^2]

given; ab=18

(a+b) =10

(a+b)^2= a^2+b^2+2ab( put value of ab, a+b )

(10)^2 =a^2+b^2+2×18

100 = a^2+b^2+36

100-36= a^2+b^2

64 = a^2+b^2

NOW PUT VALUE OF a^2+b^2=64 below

a^2-ab+b^2

a^2+b^2-ab

64 -18

46 (answer)