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Naddik [55]
3 years ago
9

Select all the solutions to the quadratic equation x2-4x-12=0

Mathematics
2 answers:
pav-90 [236]3 years ago
6 0
It can be factored.

We need two numbers that multiply to -12 and add to -4, so are two terms would be -6 and 2.

(x - 6) (x + 2) = 0

x = 6
x = -2
djverab [1.8K]3 years ago
5 0

Answer:

x1= -2

x2= 6

Step-by-step explanation:

x^2-4x-12=0

x^2+2x-6x-12=0

x(x+2)-6(x+2)

(x+2)*(x-6)

one solution

x+2=0

x=-2

other solution

x-6=0

x=6

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2 years ago
16% of 130 is what number
earnstyle [38]
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5 0
3 years ago
Read 2 more answers
Y=_x+4<br> x + 2y =<br> 8<br> How many solutions dose this linear system have
jeyben [28]

Answer:

X=-1, y=4

Step-by-step explanation:

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6 0
3 years ago
19 dollars for 5 books
viktelen [127]

Answer:

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3 0
3 years ago
The width of a rectangle is 7 meters greater than its length. If the area of the rectangle is 170 square meters, write the quadr
soldier1979 [14.2K]
Since x is the length, then x+7 has to be the width.
The area of a rectangle can be found via the formula :
A = length * width
So if we replace the area with the given number (170) and the length, and width, with what we assumed, we get..
170 = x * (x+7)
[which is.. ]
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