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tiny-mole [99]
2 years ago
8

Expand and simplify (4x+1)(x+3)

Mathematics
2 answers:
Allisa [31]2 years ago
8 0
<span><span>(<span><span>4x</span>+1</span>)</span><span>(<span>x+3</span>)</span></span><span>
=<span><span>(<span><span>4x</span>+1</span>)</span><span>(<span>x+3</span>)</span></span></span><span>=<span><span><span><span><span>(<span>4x</span>)</span><span>(x)</span></span>+<span><span>(<span>4x</span>)</span><span>(3)</span></span></span>+<span><span>(1)</span><span>(x)</span></span></span>+<span><span>(1)</span><span>(3)</span></span></span></span><span>=<span><span><span><span>4<span>x2</span></span>+<span>12x</span></span>+x</span>+3</span></span><span>=<span><span><span>4<span>x2</span></span>+<span>13x</span></span>+<span>3</span></span></span>
kari74 [83]2 years ago
7 0
Answer is 4x^2+12x+1x+3 
  combine like term it will be
      4x^2+13x+3
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For questions 20 through 23, use the graph below.
spayn [35]

Answer:

20) yes

21) -1

22) 1

23) -4

Step-by-step explanation:

8 0
2 years ago
Solve by completing the square? Could you please work it out step-by-step?
DaniilM [7]
16 n^2 -10n + 129 = 8n^2 -8

We collect the terms:
8n^2 -10n + 137 = 0

The steps for completing the square:

1) Move the "non X" (or "non N") term to the right:

8n^2 -10n  = -137

<span>2)<span> Divide the equation by the coefficient of N² which in this case is 8
n^2 -1.2n = </span></span><span><span>-17.125 </span>

3) Take the coefficient of "N"; divide it by 2; square it; add it to both sides of the equation.
-1.2 / 2 = -.6
-.6^2 = .36

</span>
n^2 -1.2n +.36 = <span>-17.125 +.36

Take the square root of both sides:</span>
(n-.6)*(n-.6) = sq root( <span> <span> <span> -16.765 </span> </span> </span> )
That's about as far as I can go.

4 0
3 years ago
In which equation x is = to 180<br> (A) x/49=7 (B) x/12-7 =13 (C) x/3-15=45
topjm [15]
The answers is C. because when you do 180/3-15 you get 45 as the answer.
7 0
3 years ago
How to solve fx=|4x|+5
olganol [36]
Replace x with |4x|+5 and simplify
7 0
3 years ago
I need awnsers please
romanna [79]

y=f(x) =12\sqrt x\\\\\text{Replace x with y and then solve for y:}\\ \\~~~~~~~x = 12\sqrt y\\\\\implies \sqrt y  = \dfrac{x}{12}\\ \\\implies y = \dfrac{x^2}{144}\\\\\implies f^{-1} (x) = \dfrac{x^2}{144} \\\\\text{Hence the inverse of the function is}~ \dfrac{x^2}{144}

5 0
2 years ago
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