Question

(8x + 16) – (3x2 – 3x - 15) is equivalent to expression​

Answer 1

Answer:

So we have: $(8x+16)-(3x^2-3x-15)$

We will start operating the parenthesis, so we will have to pass the - to the members of these  (we will have to change their sign):

$(8x+16)-3x^2+3x+15$

We can also removee the first parenthesis, as it doesn't change the meaning if it's or if it isn't::

$8x+16-3x^2+3x+15^$

Now, we will group the numbers

$-3x^2+8x+3x+16+15$

And we can now do the operations:

$-3x^2+8x+3x+16+15=-3x^2+11x+16^$

Answer 2

If you subtract the two equations you should get -3x^2 +11x+31 .