Subtract. (−d2 + 12d − 4) − (−7d2 − 2d + 12) =

The answer would be 26d - 16

I am using d^2 instead of d2 as that seems written incorrectly.

Same for -7d^2 instead of -7d2.

Start by changing the signs in the 2nd parenthesis by changing the subtract sign to a plus.

(-d^2 + 12d - 4) + (7d^2 + 2d - 12)

Now combine like terms

(7d^2 - d^2) + (12d + 2d) + -4 + -12

6d^2 + 14d + -16 (or 6d^2 + 14d - 16)

$79500

step-by-step explanation:

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: