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tatyana61 [14]
3 years ago
8

What's a² + 2a + 2 - a² + 5a?

Mathematics
2 answers:
Eddi Din [679]3 years ago
7 0

Answer:

<h2>7a +2.........................</h2>
kykrilka [37]3 years ago
3 0

Answer:

7a+2

Step-by-step explanation:

a² +2a-a²+5a+2

2a+5a=7a

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Tell whether the ordered pair is a solution to the equation.<br><br><br> (-2, 8); y = -2x - 1
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Answer:

No, the pair is not a solution to the equation.

Step-by-step explanation:

For the pair to be a solution to the equation, x = -2 must lead to y = 8, o =r vice versa. This leads to being able to solve it two ways either through x or through y.

I'll solve it through x:

y = -2x - 1

with x = -2

y = -2 * - 2 - 1

y = 4 - 1

y = 3

Since y = 3, when x = -2 the pair (-2,8) is not a pair to the solution of the equation.

PS: You can double check by solving through y and you'll find x = -4.5

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