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natima [27]
4 years ago
5

Please help? Will mark brainliest

Mathematics
1 answer:
wlad13 [49]4 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

Move the nine to the other side of the equal sign

Use the quadratic formula

Find a, b, and c

A=2, B=1, C=-10

Plug them in

1 squared minus 4(2)(-10)

1+80

81

Square root of 81=9

<u>-</u><u>1-9</u><u> </u> <u>-1+9</u>

4 4

<u>-</u><u>10</u><u> </u> <u>8</u>

4 4

Simplify

<u>-5</u> <u>2</u>

2 1

<u>-</u><u>5</u><u> </u> 2

2

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