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3 years ago

I WOULD LIKE THIS SOOVED WITH A BREAK DOWN (5x - 4)2= 36

1 answer:

3 0

$\bf (5x-4)^2=36\implies (5x-4)(5x-4)=36\impliedby using\ FOIL
\\\\\\
5^2x^2-40x+16=36\implies 25x^2-40x+16-36=0
\\\\\\
25x^2-40x-20=0\implies 5(5x^2-8x-4)=0
\\\\\\
5x^2-8x-4=0\implies (5x+2)(x-2)=0\implies 
\begin{cases}
5x+2=0\\
5x=-2\\\\
x=\cfrac{-2}{5}\\
-----\\
x-2=0\\
x=2
\end{cases}$

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If 3x plus 2 equals 90 then what is the value of x

Firdavs [7]

Hello!

$3x+2=90$

Explanation:

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First you had to subtract by 2 from both sides of the equation.

$3x+2-2=90-2$

Simplify

$3x=88$

Then you divide by 3 from both sides of the equation.

$\frac{3x}{3}=\frac{88}{3}$

Simplify it should be the correct answer.

$x=\frac{88}{3}$

Answer⇒⇒⇒⇒⇒x=88/3

Hope this helps!

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3 years ago

What is the solution to this equation 4x + 2 ( x + 6 ) = 36

Margaret [11]

The answer is A. x=4.

Start off by distributing the parentheses into the equation.

4x+2(x+6)=36

4x+2x+12=26

Combine like terms.

4x+2x=6x

6x+12=36

Now solve the equation as normal. Begin by subtracting 12 from both sides to isolate the variable.

6x+12=36

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Divide 6 on both sides to find x.

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2 years ago

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The lines y= 2x+4 and y=x-3 intersect. find the coordinates of the point of intersection

Yuri [45]

Answer:

(-7, -10)

Step-by-step explanation:

Solve for x and y in double variable equation

y = 2x + 4

y = x - 3

y = x - 3, plug in to first equation

x - 3 = 2x + 4

x = -7

y = -7 - 3

y = -10

(-7, -10)

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1 year ago