Question

Evaluate 5|x3 - 2| + 7 when x = -2.

Answer 1

57

Explanation:

5|x^3-2|+7

x=-2

5|(-2)^3-2|+7

5|-8-2|+7

5|-10|+7

5 times 10 +7

Multiply

50+7

57

Answer 2

`\displaystyle\\5\Big|x^3-2\Big|+7=\\\\=5\Big|(-2)^3-2\Big|+7=\\\\=5\Big|-8-2\Big|+7=\\\\=5\Big|-10\Big|+7=\\\\5\cdot10+7=50+7=\boxed{\bf57}`