Factor out the common term x
x(x^2 + 18) = 0
Solve for x; How?
Ask yourself: When will x(x^2 + 18) eqal zero?
When x = 0 or x^2 + 18 = 0
Solve each of the 2 equations above
Thus, x = 0, ±3√2i
Answer:
Dam- Teachers are really into homework these days- like give us a break- It's corona- School is like super stressful-
Step-by-step explanation:
I know i didn't answer this question- sry-
Answer:
B
Step-by-step explanation:
given the 2 equations
y - 4x = 12 → (1)
2 - y = 2(x + 2)² → (2)
rearrange (1) expressing y in terms of x
y = 12 + 4x
Simplify (2) by expanding factor and substituting y = 12 + 4x
2 - (12 + 4x) = 2(x² + 4x + 4)
2 - 12 - 4x = 2x² + 8x + 8
- 10 - 4x = 2x² + 8x + 8 ← rearrange into standard form
add 10 + 4x to both sides
2x² + 12x + 18 = 0 ← in standard form
divide through by 2
x² + 6x + 9 = 0
(x + 3)(x + 3) = 0 ⇒ (x + 3)² = 0 ⇒ x = - 3
Point of intersection = (- 3, 0 ) → B