What is the solution of the system? Use the elimination method.
1 answer:
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Answer:
(x - 4)(x + 4)(x - 1)(x + 1)
Step-by-step explanation:
Given
- 17x² + 16
Use the substitution u = x², then
u² - 17u + 16
Consider the factors of the constant term (+ 16) which sum to give the coefficient of the u- term (- 17)
The factors are - 16 and - 1, then
u² - 17u + 16
= (u - 16)(u - 1) ← replace u by x²
= (x² - 16)(x² - 1) ← both factors are difference of squares
= (x - 4)(x + 4)(x - 1)(x + 1)
9514 1404 393
Answer:
I'(1, -4)
Step-by-step explanation:
The transformation for rotation 90° about the origin is ...
(x, y) ⇒ (-y, x)
I(-4, -1) ⇒ I'(1, -4)
