You're looking for something like y=2x+3 and 2y=4x+6?
i calculated this problem and it's just 46.656
Answer:
B. Lynden
Step-by-step explanation:
4(2x+2) - 2(x + 2) = 10 - 3(x +2)
To use the distributive property, you multiply the terms inside the parentheses by the number outside them.
8x + 8 - 2x - 4 = 10 - 3x - 6
A is wrong. Gregory used the addition property incorrectly. He should have gotten
4(2x + 2) + (x + 2) = 10
C is wrong. Whitney used the distributive property incorrectly. She made a mistake when distributing the -2 in -2(x + 2). She should have gotten
8x + 8 - 2x - 4 = 10 - 3x - 6
D is wrong. David combined like terms incorrectly. 10 and 3x are not like terms. He should have gotten
4(2x + 2) - 2(x + 2) = 4 - 3x
Please use " ^ " to indicate exponentiation:
<span>x^2 = 9x + 6
Rewrite that in standard form: </span><span>x^2 - 9x - 6 = 0
Solve by completing the square:
x^2 - 9x + (-9/2)^2 - (-9/2)^2 - 6 = 0
(x-9/2)^2 -(-9/2)^2 - 6 = 0, or (x-9/2)^2 -81/4 - 24/4 = 0
(x-9/2)^2 -105/4 = 0, or (x-9/2)^2 = 105/4
x-9/2 = plus or minus sqrt(105/4), or x = 9/2 plus or minus sqrt(105)/2
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