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MArishka [77]
3 years ago
12

Which of the following are solutions to the equation below 3x^2+27x+54=0

Mathematics
2 answers:
VikaD [51]3 years ago
7 0

Answer:x=6

Step-by-step explanation:Step-1 : Multiply the coefficient of the first term by the constant 1 • 18 = 18

Step-2 : Find two factors of 18 whose sum equals the coefficient of the middle term, which is -9 .

-18 + -1 = -19

-9 + -2 = -11

-6 + -3 = -9 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -6 and -3

x2 - 6x - 3x - 18

Step-4 : Add up the first 2 terms, pulling out like factors :

x • (x-6)

Add up the last 2 terms, pulling out common factors :

3 • (x-6)

Step-5 : Add up the four terms of step 4 :

(x-3) • (x-6)

Which is the desired factorization

spin [16.1K]3 years ago
5 0

Answer:

x=-5

Step-by-step explanation:

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0 = 4x²<span> + 2x – 1

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that's exactly how you plug values into the quadratic formula. the coefficient for your squared value, A, is 4. take the coefficients from your other numbers as well.

a = 4
b = 2
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5.37 + x =12.89 explanation please it’s two step equation
Wewaii [24]

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7.52

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5.37 + x = 12.89

In order to solve this equation, we must isolate the variable, x.

1.) To do this, subtract 5.37 on both sides of the equation.

5.37 + x = 12.89

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x = 7.52

Therefore, x = 7.52

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