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Ipatiy [6.2K]
3 years ago
12

What are the solutions of the equation x^2-1=15

Mathematics
1 answer:
MrRa [10]3 years ago
7 0

Answer: x = +4 or -4

Step-by-step explanation:

x² - 1 = 15

x² = 15 + 1

x² = 16

Therefore, to solve for x we take the square root of both side

√x² = +/-√16

x² = +/-4

so, x = +4 or -4

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Find the length and perimeter of a rectangle if its width is 19 m and its area is 475 m?.
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The perimeter of the rectangle is: 88 m

<h3>What is the Area and Perimeter of a Rectangle?</h3>

Area of a rectangle = (length)(width).

Perimeter of a rectangle = 2(length + width).

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