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Q: X squared minus 49

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49 - x2 = -(x2 -49) = - (x-7)(x+7) divide by x -7 Answer: -(x+7) = -x-7

x = ? 42 = x squared minus x

Yes because if x2-14x+49 then it is (x-7)(x-7) when factored

This is called an inequality. If x squared is greater than or equal to 49, then x is plus or minus 7 or greater than plus 7 or less than - 7.

-22 - -22

By factoring I get x-3 divided by x+3

xsquared minus x minus 72

(x−6)(x+5)

(x - 5)(x + 4)

Sin squared, cos squared...you removed the x in the equation.

49 x 49 = 492 = 2401

x + 1

(x+4)(x-7)

x squared plus 5

(x-3)(x+2)

The answer to x2 - 2x - 4y2 - 4y =(x - 2y)(x - 2y - 2)

2

x squared minus 12 x plus 36 = (x - 6)(x - 6)

What about it? Factorise it?

(x + 2)(x - 4)

(x + 2)(x - 9)

(x - 5)(x + 3)

It is: (x+5)(x-8) when factored

(x - 10)(x + 2)

Without that other number, all you've got is zero.