Express each quadratic equation in standard form. (Show a brief solution.)
1. 4(1 + 4x) = x (x - 7)
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2. x(-18 + 9x) - 14 = - 1
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1. 4(1 + 4x) = x (x - 7)
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2. x(-18 + 9x) - 14 = - 1
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Answer:
1. -x + 23x + 4 = 0
a = -1; b = 23; c = 4
2. 9x² - 18x - 13 = 0
a = 9; b = -18; c = -13
Answer:
1. 4(1 + 4x) = x (x - 7)
4 + 16x = x² - 7x
-x² +16x +17x +4 =0
Standard form: x² +23x +4 = 0
2. x(-18 + 9x) - 14 = - 1
-18x +9x² -14 = -1
-18x +9x² -14 -1 = 0
Standard form: 9x² -18x - 13 =0
Step-by-step explanation:
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