Answer:
second option
Step-by-step explanation:
Given
+ 6x² + 5 = 0
let u = x², then
u² + 6u + 5 = 0 ← in standard form
(u + 1)(u + 5) = 0 ← in factored form
Equate each factor to zero and solve for u
u + 1 = 0 ⇒ u = - 1
u + 5 = 0 ⇒ u = - 5
Change u back into terms of x, that is
x² = - 1 ( take the square root of both sides )
x = ±
= ± i ( noting that
= i ), and
x² = - 5 ( take the square root of both sides )
x = ±
= ±
= ±
×
= ± i
Solutions are x = ± i and x = ± i
Answer:
50%
Step-by-step explanation:
650 is one half of the 1,300
That means that 650 is 50% of people who were satiufired out of 1,300
The answer is 2 cause you have to do the asides individually
Answer:
$472.5
Step-by-step explanation:
10.5x
10.5 × 45= $472.5
Hello,
you may not used what you are going to prove in a proof (la thèse)