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3 years ago

X^2+ 6x - 4 = 3x + 6

Mathematics

2 answers:

jolli1 [7]3 years ago

4 0

Answer:

x=2

x=-5

Step-by-step explanation:

You need to get everything on one side to have a quadratic equation:

x^2+6x-4 -(3x+6) = x^2+3x-10

All factors of 10 are 1*10 and 2*5.

5-2 = 3 and 5*-2 = -10

Factoring x^2+3x-10 gives us (x-2)(x+5)

x=2

x=-5

Tanzania [10]3 years ago

4 0

Answer:

x=-5 x=2

Step-by-step explanation:

x^2+ 6x - 4 = 3x + 6

Subtract 3x from each side

x^2+ 6x-3x - 4 = 3x-3x + 6

x^2+ 3x - 4 = 6

Subtract 6 from each side

x^2+ 3x - 4-6 = 6 - 6

x^2 +3x -10 =0

Factor

What 2 numbers multiply to -10 and add to 3

5*-2 =-10

5+-2 = 3

(x+5) (x-2) =0

Using the zero product property

x+5 =0 x-2 =0

x=-5 x=2

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3 0

3 years ago

Simplify the expression: 2(4 + 6j)

aniked [119]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{8 + 12j}}}}}$

Step-by-step explanation:

$\sf{2(4 + 6j)}$

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$\longrightarrow{ \sf{8 + 12j}}$

Hope I helped!

Best regards! :D

8 0

3 years ago

-2x -4 < 10 solve for x

algol [13]

Answer:

the and is x>-7

Step-by-step explanation:

collect like time

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4 years ago

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Answer:

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height = 30 cm × tan (70°)

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3 years ago