Question

Simplify the expression x(2x-1)+5 and its value at x=-2

Answer 1

Answer:

15

Step-by-step explanation:

= $x(2x\:-\:1)\:+\:5$

= $2x^{2}\:-\:x\:+\:5$

Substitute x = - 2

= $2(-\:2)^{2}\:-\:(-2)\:+\:5$

= $2(4)\:+\:2\:+5$

= $\boxed{15}$

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Answer 2

Answer:

answer is 15

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