Answer:
X^2 + X = 72
X^2 + X — 72 = 0
X^2 + 9X — 8X — 72 =0
X (X + 9) — 8(X + 9) = 0
(X + 9) (X — 8) = 0
Therefore, X = — 9 OR X = 8
Hope it helps you.
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Answer:
X^2 + X = 72
X^2 + X — 72 = 0
X^2 + 9X — 8X — 72 =0
X (X + 9) — 8(X + 9) = 0
(X + 9) (X — 8) = 0
Therefore, X = — 9 OR X = 8
Hope it helps you.