Answer:
7. (4x +10)/(x^3 +3x^2 -16x -48)
9. -320/93
Step-by-step explanation:
7. As with adding any fractions, first you find a common denominator. When the fractions are rational expressions, it often helps to factor the denominators.
6/(x^2 -16) -2/(x^2 -x -12) = 6/((x -4)(x +4)) -2/((x -4)(x +3))
= (6(x +3) -2(x +4))/((x -4)(x +3)(x +4)) . . . . . using a common denominator
= (6x +18 -2x -8)/((x -4)(x +3)(x +4))
= (4x +10)/((x^2 -16)(x +3))
= (4x +10)/(x^3 +3x^2 -16x -48)
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9. First you simplify the denominator:
2/25 -5/16 = (2·16 -5·25)/(25·16) = -93/400
Then you perform the division. This can be done by multiplying by the inverse of the denominator.
(4/5)/(2/5 -5/16) = (4/5)·(-400/93) = -320/93
Answer:
x = <u>19</u>
x - 17 = 2
2 + 17 = <u>19</u>
<em>Hope this helps!</em>
Answer:
2
Step-by-step explanation:
8 + 10 = 18
18/9 = 2
Answer:
<h3><em>C. 4/5 = 20/25</em></h3>
Step-by-step explanation:
<u>if we divide 20 and 25 by 5 then we get 4/5.</u>
<em>hope it's help you....</em>
n would equal <em>-33</em>.
<em>n=-33</em>
