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almond37 [142]
3 years ago
10

Solve for the variable x^2 - 8 = -1 Show all work please

Mathematics
1 answer:
DanielleElmas [232]3 years ago
7 0

Answer:

x = ±sqrt(7)

Step-by-step explanation:

x^2 - 8 = -1

Add 8 to each side

x^2 - 8+8 = -1+8

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)

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The longer leg of a right triangle is 4 more than the short leg. The hypotenuse is eight less than the sum of the 2 legs.
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Answer:

SteLet a = short leg of the right triangle, b = the longer leg, and c = the hypotenuse.

The longer leg of a right triangle is 4inches longer than the shorter leg: b = a + 4

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Use the Pythagorean Theorem:

 

a2 + b2 = c2

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Factors to:

 

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