How to solve (including answer) x^2+8x+7=0 by factoring

1 answer:

3 0

Since the first term in the equation is $x^{2}$ , you know that each group you make will have to have an x in it. Now, you need to figure out what times what equals 7 and adds up to 8. You can list all of the numbers that multiply to seven until you find the right numbers.

-1 x -7
1 x 7

1 and 7 add to eight and multiply to seven, so those will be the numbers in your groups. This makes your factored groups (x + 1)(x + 7).

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Find the value of x in the figure below. 26 56 Х

SashulF [63]

The answer is 30

Explanation:

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The system of equations y = one-fourth x minus 1 and y = negative one-half x minus one-fourth is shown on the graph below. On a

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Step-by-step explanation:

Step 1: Convert into expressions

y = one-fourth x minus 1 → $y = \frac{1}{4}x-1$