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crimeas [40]
4 years ago
13

Factoring x^2-4x-21=0

Mathematics
1 answer:
disa [49]4 years ago
8 0
Find two numbers that add to -4 and that multiply to -21.

After playing around with some numbers, I got -7 and 3.

So, the factored form is (x - 7)(x + 3).
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Find all real solutions of the equation by factoring. x2 = 5(x + 210)
anzhelika [568]

The real solution of the given equation by factoring x² = 5(x + 210) will be -30 and 35.

<h3>What are the roots of an equation?</h3>

The roots of an equation are the solution of that equation since an equation consists of hidden values of the variable to determine them by different processes and then the resultant is called roots.

As per the given equation,

x² = 5(x + 210)

x² = 5x + 1050

x² - 5x - 1050 = 0

x² - 35x + 30x - 1050 = 0

x(x - 35) + 30(x - 35) = 0

(x + 30)(x - 35) = 0

x = -30 and x = 35

Hence "The real solution of the given equation by factoring x² = 5(x + 210) will be -30 and 35".

To learn more about the roots of equations,

brainly.com/question/12029673

#SPJ1

8 0
1 year ago
William decided to deposit his money in a basic savings account instead of a
aleksley [76]
Mutual fund?  Not completely sure, maybe you are missing part of the question.

4 0
3 years ago
Identify 11 as either rational or irrational, and approximate to the tenths place. a.Rational:/(11)~3.3
inysia [295]
I think your answer is c but I'm not sure 
8 0
3 years ago
Help please due in 5
Rama09 [41]

Answer:

i download mo yong gautmath

Step-by-step explanation:

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7 0
3 years ago
Find the circumference of the pizza to the nearest whole number.
Sonja [21]

C= 2πr

C= 2 x 3.14 x 7

C = 43.96 inches

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3 years ago
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