Classify the following change as physical or chemical: A match lights when struck.
A. Physical change
B. Chemical change

A match lights when struck. This is a chemical change.

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Asked 1/5/2013 12:08:44 AM

Updated 12/17/2015 10:43:00 AM

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Solve the quadratic equation. 2x^2 = 32
A. x = ±4
B. x = 2 and x = 32
C. x = 1 and x = 16
D. x = ±2 **Weegy:**
2x^2 = 32;
x^2 = 32/2;
x^2 = 16;
x = ±4
(More)

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Updated 8/31/2014 6:26:33 PM

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Solve for x: (2x - 4)2 = 1
A. 2, 3
B. 3/2, 5/2
C. 3/2, 3/5
D. 3/2, -5/2
**Weegy:** The answer is A. 2,3. (More)

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Updated 8/1/2014 12:40:07 PM

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(2x - 4)^2 = 1;

4x^2 - 16x + 16 = 1;

4x^2 - 16x + 16 - 1 = 0;

4x^2 - 16x + 15 = 0;

(2x - 3)(2x - 5) = 0;

2x - 3 = 0; 2x = 3; x = 3/2;

2x - 5 = 0; 2x = 5; x = 5/2;

Solutions: x = 3/2 or x = 5/2

4x^2 - 16x + 16 = 1;

4x^2 - 16x + 16 - 1 = 0;

4x^2 - 16x + 15 = 0;

(2x - 3)(2x - 5) = 0;

2x - 3 = 0; 2x = 3; x = 3/2;

2x - 5 = 0; 2x = 5; x = 5/2;

Solutions: x = 3/2 or x = 5/2

Added 8/1/2014 12:40:04 PM

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Add the following trinomials: (5x2 - 3x - 6) + (x2 + 6x - 6).
A. 6x4 +3x
B. 6x2 + 3x + 12
C. 6x2 + 3x - 12
D. 6x2 - 12 **Weegy:** (5x2 - 3x - 6) + (x2 + 6x - 6) = C. 6x2 + 3x - 12 (More)

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Asked 1/1/2013 11:54:52 AM

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Factor the following trinomial completely: 4x2 - 48x + 144
A. 2(x - 6)2
B. 4(x - 6)2
C. (2x - 6)2
D. (2x - 12)2
**Weegy:** 4x2 - 48x + 144, the factored form is: B. 4(x - 6)2 (More)

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Asked 1/1/2013 12:15:07 PM

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Factor out the greatest common monomial: 35x - 21y
A. x(35 - 21y)
B. y(35x - 21)
C. 7xy(5 - 3)
D. 7(5x - 3y)
**Weegy:** D. 7(5x - 3y) is the answer. (More)

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Asked 1/1/2013 12:44:19 PM

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