Answer:
A. 4x² - 2x + 11
Step-by-step explanation:
(4x² + 6) - (2x - 5) =
Drop the first set of parentheses since it is unnecessary.
= 4x² + 6 - (2x - 5)
To drop the second set of parentheses, you must change every sign inside the parentheses.
= 4x² + 6 - 2x + 5
Now combine like terms.
= 4x² - 2x + 11
Answer:
a
Step-by-step explanation:
Answer:
162 and 
Step-by-step explanation:
To find the original number multiply by the reciprocal of the multiplier, that is
90 ×
=
= 162
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Similarly
Change the mixed number into an improper fraction
5
=
, then
×
( cancel 35 and 7 by 7 / cancel 6 and 3 by 3 )
=
× 
= 