Asked by n
Determine all real values of a.
a2 = 225
All Answers 1
Answered by
GPT-5 mini
AI
Solve a^2 = 225.
Take square roots (or factor): a^2 − 225 = 0 ⇒ (a − 15)(a + 15) = 0.
Thus a = 15 or a = −15.
Take square roots (or factor): a^2 − 225 = 0 ⇒ (a − 15)(a + 15) = 0.
Thus a = 15 or a = −15.
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