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Mariana [72]
3 years ago
15

Solve the quadratic by factoring 2X²-2X-12=0

Mathematics
2 answers:
olchik [2.2K]3 years ago
7 0
2x^2-2x-12=0\\\\2x^2+4x-6x-12=0\\\\2x(x+2)-6(x+2)=0\\\\(x+2)(2x-6)=0\iff x+2=0\ \vee\ 2x-6=0\\\\x=-2\ \vee\ x=3
kupik [55]3 years ago
3 0
2x^2-2x-12=0\\
2(x^2-x-6)=0\\
2(x^2-3x+2x-6)=0\\
2(x(x-3)+2(x-3))=0\\
2(x+2)(x-3)=0\\
x=-2 \vee x=3
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Free brainleist <br><br> What is (75 x 2) + (6-3)
True [87]

Answer:

(75x2)+(6-3)

         These equations are in parentesis so they happen first.

75x2=150. If we take 70 and multiply it by 2 we get 140. If we multiply 5 by 2 we get 10. So 140+10=150.

6-3 is next. That is common knowledge and we know its 3.

No we add 150+3=153 to get our answer.

Parenthesis first

Exponets after parenthesis

Multiplying going left to right

Divinding left to right

Adding left to right

Subtracting left to right

Step-by-step explanation:

I hope this helped and if so plz give brainliest.

6 0
2 years ago
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Find three consecutive odd integers such that the sum of the smaller two is three times larger increased by seven
sukhopar [10]

Answer:

three consecutive odd integers:  2n-1   2n+1   2n+3

that the sum of the smaller two is three

times larger increased by seven:                 2n-1  +  2n+1 = 3(2n+3) +7

                                                                                4n = 6n+ 9 +7

                                                                                4n = 6n+ 16

                                                                           4n -6n = 16

                                                                                -2n = 16

                                                                                   n = 16/(-2)

                                                                                   n=-8

a)   2n -1 = 2(-8) -1 = -17

b)   2n+1 = 2(-8)+1 = -15

c)   2n+1 = 2(-8)+3 = -13

Ans.   -17 ;  -15   ; -13

4 0
3 years ago
Please helllppp its in the picture and due in 5 mins​
ioda

Answer:

it is a it's a

Step-by-step explanation:

3 0
3 years ago
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1/5 PART OF A POLE IS INSIDE THE MUD, 2/3 PART IS INSIDE THE WATER AND THE REMAINING LENGTH OF 10m IS ABOVE THE SURFACE OF THE W
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Answer:

1/ 5 and 2/3

cross multiple

example

1                2       =       10

/        x       /         =      /

5                 3                3

= 10/3

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so may guess is

13.3333 infinite  or 13.34 M

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2 years ago
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I will mark brainlist please help

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