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Readme [11.4K]
3 years ago
11

Start with x2 + 4x = 12 and complete the square, what is the equivalent equation? A) (x + 2)2 = 16 B) (x + 2)2 = 14 C) (x + 4)2

= 16 D) (x + 4)2 = 28
Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer: The answer is A

Step-by-step explanation: Add the coefficient of x to the both sides.

X²+4x=12

X²+4x+4=12+4

X²+4x+4=16

X²+2x+2x+4=16

X(x+2)+2(x+2)=16

(X+2)(x+2)=16

(X+2)²=16

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How do you make 'a' the subject of the formula: ab - cd = ac
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After the 4th half life how much of the sample is left if the mass is 100g.
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\huge\boxed{\sf 6.25 \ g}

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\rule[225]{225}{2}

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<h3>~AH1807</h3>
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