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mario62 [17]
3 years ago
13

What is 3x squared + x

Mathematics
1 answer:
fgiga [73]3 years ago
6 0
3x^2 + x = x(3x + 1)
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(-5/3)•(-6/1)=(30/3)
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252 calories in 4 servings is how many calories per serving?
Lelu [443]

Answer:

63 calories

Step-by-step explanation:

Divide the number of calories by the number of servings

calories/servings

252/4

63

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(4x + 4)(ax – 1) – x2 +4
Oksana_A [137]

Answer:

b=-3

Step-by-step explanation:

If the expression simplifies to bx that means the x^{2} terms and the constant terms must be cancel out.

Simplify it first.

(4x+4)(ax-1)-x^{2} +4\\=(4ax^{2} -4x+4ax-4)-x^{2} +4\\=4ax^{2} -x^{2} -4x+4ax-4+4\\=4ax^{2} -x^{2} -4x+4ax

We know –4 + 4 will cancel out. If we simplify this expression to only an x term, then the x^{2} terms should be cancelled. Therefore, we say that 4ax^2 – x^2 = 0.

4ax^{2} -x^{2} =0\\x^{2} (4a-1)=0\\4a-1=0\\4a=1\\a=\frac{1}{4}

If we put a = ¼, then we can find the value of b:

=4(\frac{1}{4} )x^{2} -x^{2} -4x+4(\frac{1}{4} )x\\=x^{2} -x^{2} -4x+x\\ (cancel out x^{2} terms)\\

=-3x

bx=-3x\\      if the  expression is equivalent to bx

Therefore, b = –3.

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3 years ago
WILL MARK BRAINLIEST AND EXTRA POINTS ONLY HAVE 5 MINS
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Answer:

1/3?

Step-by-step explanation:

8 0
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