Simplify 4q^2-5q-1+8q^2+8q-9

A. -4q^2+3q+8
B. 12q^2+3q-10
C. -12q^2-13q-10
D. -4q^2-13q+8
I'm pretty sure its B. 12q^2+3q-10

Add (4x-2y) + (7x-5y)
A. 11x+3y
B. 11x-7y
C. -3x+3y
D. -3x-7y
I think this one is B. 11x-7y, also.

both are right!

Alright, thank you:)

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To simplify the expression 4q^2-5q-1+8q^2+8q-9, we combine like terms by adding or subtracting coefficients that have the same variable raised to the same power.

Step 1: Combine the terms with the same variable raised to the same power.
4q^2 + 8q^2 = 12q^2

Step 2: Combine the terms with the same variable raised to the power of 1.
-5q + 8q = 3q

Step 3: Combine the constant terms.
-1 - 9 = -10

Putting it all together, we have:
12q^2 + 3q - 10

Therefore, the correct answer is B. 12q^2 + 3q - 10.

Now, let's move on to the second question.

To simplify the expression (4x-2y) + (7x-5y), we combine like terms by adding or subtracting coefficients that have the same variable(s).

Step 1: Combine the x terms.
4x + 7x = 11x

Step 2: Combine the y terms.
-2y - 5y = -7y

Putting it all together, we have:
(4x-2y) + (7x-5y) = 11x - 7y

Therefore, the correct answer is B. 11x - 7y.