It has a decimal making it have different value. Without the decimal it is a whole number. Its not really an explanation, but stuff like that is hard to explain.
Step-by-step explanation:
2x^2 + x - 28
= 2x^2 - 8x + 7x - 28
= 2x(x-4) +7(x-4)
= (2x+7)(x-4)
2x+7 = 0 or x-4 = 0
x = -7/4 or x = 4
A-b
difference means subtract
X=2
El mejor programa para que te ayuda es Math,
way
