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Subjects>Math>Calculus

Factor x squared - 4x - 21?

Updated: 4/28/2022

Wiki User

∙ 9y ago

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Gretchen Medhurst ∙

Lvl 10

∙ 3y ago

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Wiki User

∙ 14y ago

x2 - 4x - 21 = x2 - 7x + 3x - 21 = x(x - 7) + 3(x - 7) = (x - 7)(x + 3)

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Wiki User

∙ 9y ago

(x + 3)(x - 7)

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X squared - 4x - 21?

-17

How do you factor x squared - 11x equals -10?

21

How do you factor 4x squared - 16?

(2x + 4)(2x - 4) to check your answer, use the FOIL method (first, outside, inside, last) F.... 2x x 2x = 4x^2 0.... 2x x -4 = -8x I..... 2x x 4 = 8x L.... 4 x -4 = -16 so 4x^2 - 16 = (2x + 4)(2x - 4)

Factor x squared minus 2x?

x(x - 2)

How do you factor 4x plus 20?

First, factor out the coefficient of x (in this case, 4) 4x+20----> 4(x+20/4) --> 4(x+5) then, go make yourself a sandwich.

Related questions

How do you factor x squared minus 4x minus 21?

x2 - 4x - 21 = (x-7)(x+3)

What does x squared - 4x factor out to?

x(x-4)

What is the factor ofsixteen x squared-fortynine y squared?

(4x - 7y)(4x + 7y)

Factor 4x squared plus 4x plus 12?

4(x^2 + x + 3)

What is the factor for thetrinomial 4x squared -7x -15?

(4x + 5)(x - 3)

Can you factor x squared plus 4x plus 2?

No

How do you factor 4x squared minus 4?

4(x - 1)(x + 1)

What is the greatest common factor of 4x squared and 6x?

4*x*x*6*x

What is the factor for 4x squared - 4x plus 2xy -2y?

2(x - 1)(2x + y)

Factor 4x squared plus 8xy plus 4y squared?

4(x+y)^2

How do you factor x squared plus 4x plus 3?

x2 + 4x + 3 =(x + 3) (x + 1)

What is 4x squared times 4x squared?

4x^4 or 4x*4x*4x*4x A formula would be (x^a)(x^b)= x^a+b x^a) / (x^b)= x^a-b

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