simplify the following expression x square minus 21x plus 90 upon x minus 15
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Answered by
3
Answer:
x² - 21x + 90 / x -15
= x² - ( 15 + 6 )x + 90 /x-15
= x² - 15x - 6x + 90 /x-15
= x ( x - 15 ) - 6 ( x - 15 ) /x-15
= ( x - 15 ) ( x - 6 ) / x- 15
=x -6
Answered by
2
Step-by-step explanation:
(x²-21x+90)/(x-15)
=(x²-15x-6x+90)/(x-15)
=x(x-15)-6(x-15)/(x-15)
=(x-6)(x-15)/(x-15)
=x-6
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