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3 years ago

Solve x2 + 8x = 24.

Mathematics

1 answer:

AysviL [449]3 years ago

4 0

Answer:

-10.3 and 2.3

Step-by-step explanation:

use quadratic formula:

-8 ± √8²-4(-24) ÷ 2

= -8 ±√64+96 ÷ 2

= -8 ± √160 ÷ 2

= -8 + 4√10 / 2 and

-8 - 4√10 / 2

which is the same as -4 + 2√10 and -4 + 2√10

which is the same as -10.3 and 2.3

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