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tatyana61 [14]
3 years ago
9

If

a^{2}+bx^{2} =13 " align="absmiddle" class="latex-formula">, and ab=6, find the value of
a)(a+b)^{2}
b)(a-b)^{2}
Mathematics
1 answer:
Mkey [24]3 years ago
7 0

a^2-b^2=13;\ ab=6

a)\\(a+b)^2=a^2+2ab+b^2=(a^2+b^2)+2(ab)=13+2\cdot6=25\\\\b)\\(a-b)^2=a^2-2ab+b^2=(a^2+b^2)-2(ab)=13-2\cdot6=1

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