Which value must be added to the expression x^2 +16x to make it perfect-square trinomial?
2 answers:
Answer:
Its C on edg
Step-by-step explanation:
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X^2 + 16x + ? a^2 + 2ab + b (a + b)^2 which is a perfect square. To find b to determine the last value, you divide 16x by 2x. so: b = 8 the last value would be 8^2 which is 64. Hence answer is C - 64
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