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Novay_Z [31]
3 years ago
12

YO PLEASE HELP AS SOON AS POSSIBLE!!! MARKIN BRAINIEST!!!

Mathematics
1 answer:
Elden [556K]3 years ago
7 0
√2 • √2 = 2
√5 • √7 = √35
√2 •√18 = √2 • 3√2 = 3(2) = 6
√2 • √6 = √12 = 2√3
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Please help me solve this for 15 points! <br><br>-x2 + 4x - 54 = 0​
Mazyrski [523]

Answer:

x1 =2-5i*sqrt(2)

x2 =2+5i*sqrt(2)

Step-by-step explanation:

-x^2 +4x-54=0 (quadratic equation)

a=-1, b=4, c=-54

x1=(-b+sqrt(b^2-4ac))/2a

x1=(-4+sqrt(4^2 - 4*(-1)(-54))/2*(-1)

x1=(-4+sqrt(16-216))/(-2)

x1 =(-4+sqrt(-200))/(-2)

x1 =(-4+sqrt(200i^2))/(-2) i^2=-1

x1 =(-4+sqrt(100*2*i^2))/(-2)

x1 =(-4+10i*sqrt(2))/(-2)

x1 =2-5i*sqrt(2)

x2 =(-b-sqrt(b^2-4ac))/2a

x2 =(-4-10i*sqrt(2))/(-2)

x2 =2+5i*sqrt(2)

7 0
3 years ago
Read 2 more answers
I need help factoring this expression
omeli [17]
X^2(x+2)-4(x+2)

(x^2-4) (x+2) = 0

do you have to keep going/?

or thats all they want?
3 0
3 years ago
Select the correct answer.
Lisa [10]

Answer:

B

Step-by-step explanation:

Inverse means the opposite in effect. The reverse of. Therefore if f(x) is -1,-3 bad you are looking for the inverse which is g(x) is -1,__. It would be 3.

4 0
3 years ago
Point E is located at coordinates (-7, -5) Point F is located at coordinates (-2, 7). What is the length of EF?
Alenkinab [10]

Answer:

12 units?

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
What is T in -5t-2(5t+10)=100​
Alina [70]

Answer:

t=-8

Step-by-step explanation:

-5t-2(5t+10t)=100

-2 x 5t=-10t

-2 x 10 = -20

-5t-10t-20=100

combine terms and add 20

-15t=120

divide by -15

t=-8

7 0
3 years ago
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