Answer: a²+b² = -99/2
Step-by-step explanation:
Since we are given two equations, this equations will be solved simultaneously to get a² and b²
a³ - 3ab² = 47 ... 1
b³ - 3a² b = 52... 2
From 1, a(a² - 3b²) = 47...3
From 2, b(b² - 3a²) = 52... 4
Adding 3 and 4, we have;
a²+b²-3b²-3a² = 99 (note that a and b will no longer be part of the equations as they have been factored out)
a²+b²-(3b²+3a²) = 99
(a²+b²) -3(b²+a²)= 99
Taking the difference we have
- 2(a²+b²) = 99
a²+b² = -99/2
Answer:
Sharifa can pay for the DVD player first.
Step-by-step explanation:
<u>Max:</u>
99 - 31 = $68 remaining
68 / 8.5 = <em>8 weeks</em>
<u>Sharifa:</u>
99 - 25.5 = $73.50 remaining
73.5 / 10.5 = <em>7 weeks</em>
Detecting...<span>
</span>Your answer would be:
Answer:
-20x-2
Step-by-step explanation:
