Answer:
(r+s) (x) = 4x+3
(r*s) (x) = 3x^2 +x-4
(r-s) (-1) = -3
Step-by-step explanation:
r(x) = x-1
s(x) = 3x+4
(r+s) (x) = x-1 + 3x+4
Combine like terms
= 4x+3
(r*s) (x) = ( x-1) ( 3x+4)
FOIL
= 3x^2 +4x-3x-4
= 3x^2 +x-4
(r-s) (x) = x-1 - (3x+4)
Distribute the minus sign
=x-1-3x-4
=-2x-5
Let x = -1
(r-s) (-1) = -2(-1) -5
2-5
-3
Answer:
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Step-by-step explanation:
Answer:
2a-5 over 6a^2.
Step-by-step explanation:
2/7a - 5/a^2. If you multiply 2/7a by a you can give them the same denominator and subtract them.
2a/7a^2 - 5/a^2.
2a-5 over 7a^2 - a^2.
2a-5 over 6a^2.
Answer:
Try 20.
Step-by-step explanation:
To round 19.5 to the nearest whole number consider the tenths’ value of 19.5, which is 5 and equal or more than 5. Therefore, we have to round up: the whole number part of 19.5, 19, increases by 1 to 20, and the decimal point and all digits (.5) are removed.
19.5 rounded to the nearest whole number = 20