Square root of X+15 plus square root of X = 15. By observation, X=49 but when I square terms to remove radicals I don't get the desired result???

QUESTION POSTED AT 01/06/2020 - 04:11 PM

Answered by admin AT 01/06/2020 - 04:11 PM

√x+15 + √x=15
√(x+15)=15-√x
x+15=225-30√x +x
30√x=210
√x=7
x=49
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