A. addition:
[tex]3x^{2} + 2x - 6\\2x^{2} - 2x + 10\\------\\5x^{2} + 4[/tex]
B. subtraction:
[tex]3x^{2} + 2x - 6\\2x^{2} - 2x + 10\\-------\\x^{2} + 4x - 16[/tex]
Answer:
1. 5x²+4 2.-x²-4x+16
Step-by-step explanation:
The question is on operations in quadratic equations
1. Addition
P=3x²+2x-6
Q= 2x²-2x+10
P+Q= 3x²+2x-6 +2x²-2x+10
Collect like terms
3x²+2x²+2x-2x-6+10
5x²+4
2.Subtraction
Q-P
(2x²-2x+10) -(3x²+2x-6)
open brackets
2x²-2x+10-3x²-2x+6
collect like terms
2x²-3x²-2x-2x+10+6
-x²-4x+16
-x²+4x+16
