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Nezavi [6.7K]
4 years ago
13

Factor the polynomial below. 4x^2-16 A. 4(x + 2)(x - 2) B. 4(x - 2)2 C. 4(2 - x)2 D. 4(2 + x)(2 - x)

Mathematics
2 answers:
Natasha2012 [34]4 years ago
7 0

Answer:

The answer is 4(x+2)(x-2)

Step-by-step explanation:

Just had this on a test, got it right! :)

marusya05 [52]4 years ago
3 0

Answer:

Option A, 4(x + 2)(x - 2)

Step-by-step explanation:

<u>Step 1:  Pull out a 4 </u>

<em>4(x^2 - 4) </em>

<u>Step 2:  Factor x^2 - 4 </u>

x^2 - 4

<em>(x + 2)(x - 2) </em>

<u>Step 3:  Combine </u>

<em>4(x + 2)(x - 2) </em>

Answer:  Option A, 4(x + 2)(x - 2)

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Find soluton to x^2-14x+49=25
Artyom0805 [142]

\boxed{x=12 \ and \ x=2}

<h2>Explanation:</h2>

In this exercise, we have the following equation:

x^2-14x+49=25

We can write this Quadratic Equation in Standard Form as follows:

x^2-14x+49=25 \\ \\ Subtract \ 25 \ from \ both \ sides: \\ \\ x^2-14x+49-25=25-25 \\ \\ x^2-14x+24=0 \\ \\

So this is a Non-perfect Square Trinomial. To factor out this, let's choose two numbers such that:

  • The sum is -14
  • The product is 24

Those numbers are:

  • -12 and -2
  • SUM: -12-2 = -14
  • PRODUCT: (-12)(-2)=24

So we can write this as:

x^2 + (a + b)x + ab=(x + a)(x + b) \\ \\ a=-12 \\ b=-2 \\ \\  x^2-14x+24=(x-12)(x-2)=0 \\ \\ So \ the \ solutions \ are: \\ \\ \boxed{x=12 \ and \ x=2}

<h2>Learn more:</h2>

Quadratic Ffrmua: brainly.com/question/10188317

#LearnWithBrainly

6 0
3 years ago
Got it wrong plss help and explain
Karolina [17]
Because it says "not black" we would do white marbles
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Because the answer is wanted as a decimal divide 15 by 20
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2(3)-5 = 6-5 = 1

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eduard

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