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sattari [20]
4 years ago
5

Solve 2x^2 + 16x + 50 = 0.

Mathematics
1 answer:
romanna [79]4 years ago
3 0

Answer:

x=-4+3i, -4-3i.

Step-by-step explanation:

2x^2+16x+50=0

factor out the 2

x^2+8x+25=0

Apply the quadratic formula.

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Square root of 784 by prime factorization
Digiron [165]

Answer:

Step-by-step explanation:

Hello,

we can divide 784 by 2 and then again by 2 etc until we find all the terms as below

784 = 2*2*2*2*7*7 that we can write

784=2^47^2

Then

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hope this helps

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4 years ago
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(4x = y - 1 <br> (6x - 2y = -3<br> substitution
agasfer [191]

Hey there! :)

Equation 1) 4x = y - 1

Equation 2) 6x - 2y = -3

We want both equations to match in a sense where both x & y are on the same side of the equal sign. To achieve this, simply subtract y from both sides in equation 1.

This will leave us with : 4x - y = -1

Now, line up the equations with one another.

1) 4x - y = -1

2) 6x - 2y = -3

Now, multiply 2 to ALL of equation 1.

2(4x - y = -1)

Simplify.

8x - 2y = -2 → We'll call this new equation 3. Now, line up equation 3 with equation 2.

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Subtract equations from one another.

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Divide both sides by -2.

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Simplify.

x = 1/2

Now, plug in 1/2 for x into our first equation.

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Simplify.

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Subtract 2 from both sides.

-y = -1 - 2

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Divide both sides by -1.

y = 3

So, our answer is :  x = 1/2, y = 3 OR (1/2, 3)

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