Question

Add - ( 19x^2 + 6x + 9 ) , ( -5x^2 + 4x - 7 ) and ( -8x^2 - 3x + 15)

Answer 1

Add $(19x^{2} +6x+9)$,$(-5x^{2} +4x-7)$ and $(-8x^{2} -3x+15)$

Definition:

A quadratic function is a polynomial function with one or more variables in which the highest exponent of the variable is two.

Step-by-step explanation:

[tex](19x^{2} +6x+9)+(-5x^{2} +4x-7)+(-8x^{2} -3x+15)\\ =19x^{2} +6x+9-5x^{2} +4x-7-8x^{2} -3x+15\\ =19x^{2} -5x^{2} -8x^{2} +6x+4x-3x+9-7+15\\ =6x^{2} +7x+17[/tex]

Therefore,the addition of the quadratic functions yields $6x^{2} +7x+17$