stacey-watson_60b99f09c2bb6
stacey-watson_60b99f09c2bb6
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Hi there! You need to remember / know the following stuff to solve this problem: ♦ √(x + y)² = (x + y) (and vice versa) ♦ (x - y)² = x² - 2xy + y² (and vice versa) √(30x + 15) = x + 8 → Write down the equation correctly. 30x + 15 = (x + 8)² …