5x²+13x-4-17x²-7x+19+15x²+5x-21x-7=
=5x²+15x²-17x² +(13x-7x+5x-21x) -4-7+19=
=3x²-10x+8
Answer:
-19
Step-by-step explanation:
plug in 2 for x.
37.6 because the fist part is times 2 so 14•2
Answer:
The answer is A.
Step-by-step explanation:
When you multiply by a negative number, you MUST change the sign.
The answer is -83.7418
Rounded to: -83.74
