Question

Expand and simplify:$5x^{2} -x-(x^{2} -3x)$

Answer 1

Answer:

4x² + 2x or 2x × (2x - 1)

Step-by-step explanation:

when there is minus sign in front of a "(" , we change the sign (steps one -)

5x² - x - x² + 3x ( explanation- we changed the sign cuz first rule a minus and a minus is a plus but while we follow this rule , we need make sure we don't change our question , by that I mean is that x after 5x² is supposed to minus x² so that will remain same but again if there is a minus and minus sign , we have a plus)

4x² - x - 3x ( explanation- we collect the like terms , they were 5x² and x² . )

4x² + 2x ( explanation - we collected like terms - x and 3x .)

so 4x² + 2x is the final answer , you can't get any further answer.

expand-

also if you wanna expand it -

2x × (2x - 1)

is your answer !