Answer:
(x - 13) and (x + 3)
Step-by-step explanation:
Given
x² - 10x - 39
Consider the factors of the constant term (- 39) which sum to give the coefficient of the x- term (- 10)
The factors are - 13 and +3, since
- 13 × 3 = - 39 and - 13 + 3 = - 10, thus
x² - 10x - 39 = (x - 13)(x + 3) ← in factored form
Answer:
x = ± 10
Step-by-step explanation:
- 5x² = - 500 ( divide both sides by - 5 )
x² = 100 ( take square root of both sides )
x = ± 
= ± 10
That is x = - 10 or x = 10
Answer:
(4,2.5)
Step-by-step explanation:
241,056. Use a calculator.
If we subtract the 2 equations we eliminate x:-
x - x - 2y - (-y) = -26--2
-y = -24
y = 24
Plug this into the first equation:-
x - 2(24) = -26
x = -26 + 48 = 22
Answer is x = 22 and y = 24
