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Kamryn Pollard
Mathematics
24 April, 02:12
What are the solutions to x2 - 6x - 7 = 0?
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Enrique Bailey
24 April, 02:13
0
Answer: x is - 1 & 7
Step-by-step explanation:
X2-6x-7=0
Quadratic equation
Variables of - 7 that will give-6 are
-7 & + 1
X2-7x+x-7=0
X (x-7) + 1 (x-7) = 0
(X+1) (x-7) = 0
X+1=0
X = - 1 or
X-7=0
X = 7
Therefore,
X is either - 1 & 7
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Yuliana
24 April, 02:21
0
x=7 x=-1
Step-by-step explanation:
x^2 - 6x - 7 = 0
Factor
What two numbers multiply to - 7 and add to - 6
-7*1 = -7
-7+1 = - 6
(x-7) (x+1) = 0
Using the zero product property
x-7 = 0 x+1 = 0
x=7 x=-1
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