Which of the following quadratic equations have x= 3 as one of its roots.
(A) x²-8x+15=0
(B) x²+8x + 15=0
(C) x²-8x-15=0
(D) x²+8x-15=0
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Answer:a) x² - 8x + 15 = 0
3² - 8 × 3 + 15 = 0
9 - 24 + 15 = 0
-15 + 15 = 0
0 = 0
Step-by-step explanation:
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