Question

add following 3x²-2x+5,-5x²-2+3xand -7x+4x²-5
​

Answer 1

3x^2-2x+5+-5x^2-2+3x+-7x+4x^2-5

-2x^2-6x-2

please follow me

Answer 2

Answer:

$3x {}^{2} - 2x + 5 \\ = 3x {}^{2} - 7x \\ x {}^{3} =3 - 7 \\ x {}^{3} = - 4 \\ \\ - 5x {}^{2} - 2 + 3 \\ = - 5x {}^{2} - 5 \\ x {}^{2} = 10 \\ \\ - 7x {}^{2} + 4x {}^{2} - 5 \\ = - 7x {}^{2} - 1x {}^{2} \\ x {}^{2} = 8 \\ \\ - 4 + 10 + 8 \\ = 14$