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alexandr402 [8]
1 year ago
9

If a2 -2ab + b2 = 9 and a

Mathematics
1 answer:
inessss [21]1 year ago
6 0

If a2 -2ab + b2 = 9 and a\begin{gathered} a^2-2ab+b^2=9 \\ aStep 1 factorize[tex]\begin{gathered} a^2-2ab+b^2=(a-b)^2 \\  \end{gathered}

then

[tex]\begin{gathered} (a-b)^2=9 \\ \sqrt{(a-b)^2}=\sqrt{9} \\ a-b=\pm3 \\ \\ aa-b=-3
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