Answer:
<u>Use the following identity:</u>
- a³ + b³ + c³ = 3abc if a + b + c = 0
<u>Substitute:</u>
<u>and get:</u>
- (3x)³ + (5y)³ + (4z)³ = 3(3x)(5y)(4z)
- 27x³ + 125y³ + 64z³ = 180xyz
Answer:
- 85
Step-by-step explanation:
The n th term of a geometric series is
= a
where a is the first term and r the common ratio
1 ← is the n th term of a geometric series
with a = 1 and r = - 2
The sum to n terms of a geometric series is
=
=
=
=
= - 85
A linear inequality contains one of the symbols of inequality: < is less than. > is greater than. ≤ is less than or equal to.
45 because you multiply the 8 by 9 to get 72 and then you multiply 5 by 9 to get 45
Answer:
5x² - x + 3 = 0
Step-by-step explanation:
The standard form of a quadratic equation is
ax² + bx + c = 0 ( a ≠ 0 )
Given
5x² + 3 = x ( subtract x from both sides )
5x² - x + 3 = 0 ← in standard form