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katovenus [111]
3 years ago
13

Help pls! solve for x

Mathematics
1 answer:
amm18123 years ago
3 0

Answer:

X= -z+m

Hope it works!

Step-by-step explanation:

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3 years ago
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The sum of the roots of x^2+6x-55=0
kolbaska11 [484]

Answer:

The sum of the roots is -6

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2} +6x-55=0  

so

a=1\\b=6\\c=-55

substitute in the formula

x=\frac{-6(+/-)\sqrt{6^{2}-4(1)(-55)}} {2(1)}

x=\frac{-6(+/-)\sqrt{256}} {2}

x=\frac{-6(+/-)16} {2}

x1=\frac{-6(+)16} {2}=5

x2=\frac{-6(-)16} {2}=-11

The roots are 5,-11

Find the sum of the roots

5+(-11)=-6

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3 years ago
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3 years ago
Simplify the expression. 3+2⋅[(2+1)⋅5+8] A. 75 B. 33 C. 57 D.49
rewona [7]

The answer is D.

3+2((2+1)(5)+8)

=3+2((3)(5)+8)

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=3+(2)(23)

=3+46

=49

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3 years ago
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