Answer:
the third one
Step-by-step explanation:
the absolute value of -6 is 6
I think it is the 3rd one but I might be wrong...
Answer:
8x² + 11x - 9
Step-by-step explanation:
M - N
= 5x² + 7x - 4 - 1(- 3x² - 4x + 5) ← distribute parenthesis by - 1
= 5x² + 7x - 4 + 3x² + 4x - 5 ← collect like terms
= 8x² + 11x - 9
This is the answer to your question. I hope this helps!
The correct answer for each is
a= 390.8
b= 136.8