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devlian [24]
4 years ago
10

Rewrite the equation by completing the square. x^2 + 2x – 48 = 0

Mathematics
1 answer:
slamgirl [31]4 years ago
3 0

Answer:

(x+1)^2 = 49

x = 6                 x = -8

Step-by-step explanation:

x^2 + 2x – 48 = 0

Add 48 to each side

x^2 + 2x =48

Take the coefficient of x

2

Divide by 2

2/2=1

Square it

1^2 =1

x^2 + 2x +1=48+1

x^2 +2x+1 = 49

(x+1)^2 = 49

Take the square root of each side

sqrt((x+1)^2) =±sqrt( 49)

x+1 = ±7

Subtract 1 from each side

x+1-1 = -1  ±7

x = -1+7          x = -1 -7

x = 6                 x = -8

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Answer:

b = (c - 3a)/4

Step-by-step explanation:

3a + 4b = c

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b = (c - 3a)/4

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Answer:

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Step-by-step explanation:

Since adding a positive makes a negative number stay negative, it equals -4.

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natta225 [31]

Using a system of equations, it is found that a value of h = 4 will result in an infinite number of solutions.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

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In this problem, the equations are:

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