Question

Find a square plus b square if a-b =7 and ab=18

Answer 1

Answer:

answer is 126 in square

Answer 2

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

$(7) {}^{2} = a {}^{2} + b {}^{2} - 2 \times 18$

$49 = {a}^{2} + b {}^{2} - 36$

$49 + 36 = a {}^{2} + b {}^{2}$

$85 = a {}^{2} + b {}^{2}$

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