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djverab [1.8K]
3 years ago
9

Use substitution method & show your work.y = x^2 + 3x - 14x + 1 = y

Mathematics
1 answer:
irina1246 [14]3 years ago
7 0
4x + 1 = x^2 + 3x - 1
4x = x^2 + 3x - 2
0 = x^2 -x - 2
0 = x^2 -x + 1 - 3
0 = (x - 1)^2 - 3
3 = (x - 1)^2
sqrt 3=(x-1) and (-(x-1))
x = 1+sqrt 3 and 1-sqrt 3
sqrt means square root
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