Answer:
Step-by-step explanation:
2x+5y=12
3x+4y=11
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3(2x+5y)=3(12)
-2(3x+4y)=-2(11)
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6x+15y=36
-6x-8y=-22
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7y=14
y=14/7=2
2x+5(2)=12
2x+10=12
2x=12-10=2
x=2/2=1
x=1, y=2. (1, 2)
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I just provided you an example of a system of equations and I already solved it for you.
4x^2 + 12x + 9 - 2x^2 - 7x - 15
4x^2 - 2x^2 = 2x^2
12x - 7x = 5x
9 - 15 = -6
2x^2 + 5x - 6
I believe the answer is 88
A) 6
The cube root of 216 is 6. 6 x 6 x 6, or 6^3 = 216.
