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If a^2+b^2=34 and ab=15 find the value of a+b and a-b |
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Answer» a+B =+8 or -8 a-2b =+2 or -2Step-by-step EXPLANATION:a^2+b^2=34ab=15 (a+b)^2=a^2+b^2+2ab(a+b)^2=34+2×15 ( a+b)^2=64a+b=√64a+b=+8 or -8(a-b)^2=a^2+b^2-2ab(a - b)^2=34-2×15(a - b)^2=34-30(a - b)^2=4a - b=√4a - b=+2or-2 |
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