Answer:
(x + 2) is a factor of f(x)
Step-by-step explanation:
Using the remainder theorem to divide f(x) by (x - h)
Evaluate f(h) and if equal to 0 then (x - h) is a factor
f(- 3) = (- 3)³ - 7(- 3)² + 36 = - 27 - 63 + 36 ≠ 0
f(- 2) = (- 2)³ - 7(- 2)² + 36 = - 8 - 28 + 36 = 0
f(- 6) = (- 6)³ - 7(- 6)² + 36 = - 216 - 252 + 36 ≠ 0
f(2) = 2³ - 7(2)² + 36 = 8 - 28 + 36 = 16 ≠ 0
Hence (x + 2) is a factor of f(x)
Answer: DB=31.66and EC=49.32
Step-by-step explanation:
Answer:
I think E.
Step-by-step explanation:
Answer:
X=17
Step-by-step explanation:
7x-1+5x-23=180
12x-24=180
12x=204
x=17
Answer:
Step-by-step explanation:
Remark
By manipulating parts of right angle triangles, you get 15/x = x/6
Solution
x^2 = 90
x = sqrt(90)
x = sqrt(3*3 * 2 * 5)
x = 3*sqrt(10)
