Q: What is One minus x squared plus x squared minus one minus four?

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

3.

X= plus or minus 1

Minus five, plus one, equals minus four.

It equals 0

3

Without knowing what "x" is, we cannot say what the answer will be. And without knowing the answer, we cannot solve for "x". Set x at zero, for example. Zero squared is zero, plus 6 time zero which is zero, minus 55. Your answer is then -55. Set x at one, for example. One squared is one, plus 6 times 1 which is six, minus 55. Your answer is then -48. Etc.

Why don't you figure it out yourself

20

(9r - 8)(9r + 8)

(9x + 8)(9x - 8)

Remember to factor out the GCF of the coefficients if there is one. A perfect square binomial will always follow the pattern a squared plus or minus 2ab plus b squared. If it's plus 2ab, that factors to (a + b)(a + b) If it's minus 2ab, that factors to (a - b)(a - b)