Add or subtract show your work for each problem by using boxes circles colored underlined or group in to identify the like terms before you simplify. a.(-2x^2-4x+13)+(12x^2+2x-25)

b.(7x^2+4x-26)-(-7x^2-3x+15)

Answer :

(a)

(b)

Step-by-step explanation :

Part a:

The given expression is:

First we have to open the brackets.

Now adding or subtracting like terms like (x², x and number)

Part b:

The given expression is:

First we have to open the brackets.

Now adding or subtracting like terms like (x², x and number)

your answer is 228

step-by-step explanation:

add the top and bottom bases together, then divide them by 2, then multiply by the height.