Question

Simplificar ( 3 x² + 7 ) + ( 7 x² - 3 )  Siguiente Ejercicio   Restar 30 x² - 24 x + 18 de 48 x² - 36 x² + 2 x - 4

Answer 1

1. Simplificar ( 3 x² + 7 ) + ( 7 x² - 3 )
3x² + 7 + 7x² - 3
10x² + 4
2(5x² + 2)

2. Restar 30 x² - 24 x + 18 de 48 x² - 36 x² + 2 x - 4
(48x² - 36x² + 2x - 4) - (30x² - 24x + 18)
12x² + 2x - 4 - 30x² + 24x - 18
-18x² + 26x - 22

Answer 2

1.-)  ( 3 x² + 7 ) + ( 7 x² - 3 )=3x²+7+7x²-3=10x²+4=2(5x+2)

2.-)  Restar 30 x² - 24 x + 18 de 48 x² - 36 x² + 2 x - 4
                                                   -12x² +  2x - 4
                                                   -30x² + 24x -18
                                                -----------------------
                                                    - 42x² + 26x - 22