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3 years ago

Solve each equation. 1. 25 - 3x = 40 2. } (x – 10) = -4

Mathematics

2 answers:

nordsb [41]3 years ago

6 0

Step-by-step explanation:

For no 1

25 - 3x = 40 

- 3x = 40 - 25 

- 3x = 15 

 - x = 15 / 3

Therefore x = - 5 

Now for no. 2

1/3 ( x - 10) = - 4 

( x - 10 ) = - 12 

x = - 12 + 10

Therefore x = - 2 

Hope it will help :)

Maru [420]3 years ago

3 0

Answer:

1.- 5

2. - 2

Step-by-step explanation:

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1. Solve by factoring and using the zero product property. (Diamond & x2 – 2x – 15 = 0

Harlamova29_29 [7]

The factors are: x-5 and x+3

Step-by-step explanation:

Given

$x^2-2x-15 = 0$

Simplifying

$x^2-5x+3x-15 = 0\\x(x-5) + 3(x-5) = 0\\(x+3)(x-5) = 0$

Let us define the zero product property first

The zero product property states that

if ab=0 then either a=0 or b=0

So,

$x+3 = 0\\x+3-3 = 0-3\\x = -3\\AND\\x-5 = 0\\x-5+5 = 0+5\\x = 5$

Hence,

the factors are: x-5 and x+3

Keywords: Factorization, Zero product property

Learn more about factorization at:

#LearnwithBrainly

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