Question

How to solve Subtract 2a² - 16a - 45 from -8a² + 14 a - 24 ​

Answer 1

Subtracting :

$\sf\:2a^2-16a-45 and -8a^2+14a-24\:$

$\sf\:=-8a^2+14a-24 - ( 2a^2-16a-45)\:$

$\sf\:=-8a^2+14a-24 -2a^2+16a+45\:$

$\sf\:=-8a^2-2a^2+14a+16a-24+45\:$

$\sf\:=-10a^2+30a + 21\:$

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