Answer:
Step-by-step explanation:
On each of those equations, combine like terms.
[tex](3x^{2}-7x +14) + (5x^{2} +4x-6)\\ 3x^{2} +5x^{2} = 8x^{2} \\-7x+4x=-3x\\14-6=8\\Your expression would be: 8x^{2} -3x+8[/tex]
This expression would be equivalent to B
[tex]( 2x^{2} -5x-3)+(-10x^{2} +2x+7)\\2x^{2} -10x^{2} =-8x^{2} \\-5x+2x=-3x\\-3+7=4\\[/tex]
Your expression would be: [tex]-8x^{2} -3x+4[/tex]
This expression would be equivalent to A
[tex]( 12x^{2} -2x-13) + (-4x^{2} +5x+9)\\12x^{2} -4x^{2} =8x^{2} \\-2x+5x=3x\\-13+9=-4[/tex]
Your expression would be: [tex]8x^{2} +3x-4[/tex]
This expression would be equivalent to C
