3 years ago

Write an equation for each problem. The square of a number is 8 more than twice the number.

Mathematics

1 answer:

avanturin [10]3 years ago

3 0

Answer:

The equation is equal to

$x^{2}=2x+8$

Step-by-step explanation:

Let

x -----> the number

we know that

The equation that represented the problem is equal to

$x^{2}=2x+8$

$x^{2}-2x-8=0$

Solve the quadratic equation by graphing

The solution are x=-2 and x=4

see the attached figure

therefore

The number can be -2 or 4

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