Answer:
<u>n=-6</u>
Step-by-step explanation:
First, distribute the 5 and the -
5n+20-n-7=-11 now combine like terms,
4n+13=-11 subtract 13 from each side
4n=-24 divide by 4
/4 /4
<u>n=-6</u>
The factoring: (x+2) (x+3) (x-3)
zeros: x=-2,-3,3
The expression to be simplified is: (9x^2 - 25) / (3x + 5)
We first factor the numerator: 9x^2 - 25 is a difference of two squares, (3x)^2 - (5)^2, so this can be factored into (3x + 5)(3x - 5).
Then the expression becomes (3x + 5)(3x - 5) / (3x+5), and the 3x + 5 term cancels out, leaving just 3x - 5 as the final answer.
Answer:
9 m²
Step-by-step explanation:
4.5 x 4 = 18
18/2 = 9
-3 × -5 = -15
-15 × 0 = 0