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Q: How do you factor x squared plus 4?

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(x+1)(x+4)

(x-1)(x-4)

4(x+y)^2

(x - 8)(x - 4)

Factor it out: (x+2) squared

4(x^2 + x + 3)

3(x + 4)(x + 1)

2(x + 4)(x + 2)

(x+2)(x+2) or (x+2)^2

(x + 5) (x - 4)

x2 + 4x + 4 = (x+2)2

2(x^2 + 2)

Since the problem has 4 terms, first you factor x cubed plus 9x squared, then you factor 2x plus 18. So when you factor the first two term, you would get x sqaured (x plus 9). Then when you factor the last two terms and you get 2 (x plus 9). Ypure final answer would be (x squared plus 2)(x plus 9)

x2 + 6x + 8 =(x + 2)(x +4)

(x - 4)(x - 3)

(a + x^2)(b + y^2)

If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored

No

2(x + 3)(x^2 + 4)

It is: x(x+3)

x(x + 2)

x2 + x - 12 = (x + 4) (x - 3)

x(x + 8)

(x + 6)(x + 9)

(x + 3)(x + 3)