Question

Simplify:x(2x-1)+5 and find its value at x=-2​

Answer 1

$\huge {\mathbb {\underline {\purple{ANSWER}}}}$

$\sf \: x(2x - 1) + 5 = 0$

$\sf \: if \: x = - 2$

$\sf - 2(2 \times - 2 - 1) + 5 = 0$

$\sf - 2( - 4 - 1) + 5 = 0$

$\sf - 2( - 5) + 5 = 0$

$\sf10 + 5 = 0$

$\sf15$

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Answer 2

Answer:

-2

Step-by-step explanation:

( 2x-1)+5

3x+5

x =3 - 5

= - 2