Answer:
Completing the square.
Step-by-step explanation:
ax2 + bx + c has "x" in it twice, which is hard to solve.
But there is a way to rearrange it so that "x" only appears once. It is called Completing the Square
4, 4, and 4.
Answer: x = 63
since they are proportional to each other,
36/4 = 9
90/10 = 9
126/14 = 9
7*9 = 63
Hope you like my answer
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