+11 what algebraic expression must be added to the sum of 3x^2+4x+8 and 2x^2-6x+3 to give 9x^2-2x-5 as the result?
+5265 (3x2+4x+8)+(2x2-6x+3)=5x2-2x+11
(5x2-2x+11)+y=9x2-2x-5
Solve algebraically. Subtract 5x2 from both sides, add 2x to both sides, subtract 11 from both sides.
y=4x2-16
So, the equation needed is 4x2-16
+5265 (3x2+4x+8)+(2x2-6x+3)=5x2-2x+11
(5x2-2x+11)+y=9x2-2x-5
Solve algebraically. Subtract 5x2 from both sides, add 2x to both sides, subtract 11 from both sides.
y=4x2-16
So, the equation needed is 4x2-16
