goodperson21
11.04.2021 •
Mathematics
Find the value of c that makes x2 + 6x + c a perfect square. Then write the trinomial as a perfect square.
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Ответ:
Hi there!
To find the value of c, we can say:
ax² + bx + c
(b/2)² = c
Therefore:
(6/2)² = 3² = 9
Rewrite the trinomial:
x² + 6x + 9
To write as a binomial, take the square root of c:
√9 = 3
Thus:
(x + 3)² = x² + 6x + 9
Ответ:
Hello!
Your answer is A) 2 - x