Rewrite the following to simplest factor form: 8+ (x-3)3
Question
Rewrite the following to simplest factor form: 8+ (x-3)3
Solution 1
The expression 8 + (x-3)³ can't be simplified further as it is already in its simplest form. The cube of (x-3) can't be simplified without knowing the value of x.
Solution 2
The expression 8 + (x-3)³ is already in its simplest form. However, if you want to expand it, you can do so as follows:
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Expand the cube (x-3)³ using the formula a³-b³ = (a-b)(a²+ab+b²). Here, a = x and b = 3.
So, (x-3)³ = (x-3)[(x)² + (x)(3) + (3)²] = (x-3)(x² + 3x + 9)
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Distribute (x-3) into each term inside the parenthesis:
(x-3)(x² + 3x + 9) = x³ - 3x² + 3x² - 9x + 9x - 27 = x³ - 27
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Now, add 8 to the expanded form of (x-3)³:
8 + (x-3)³ = 8 + x³ - 27 = x³ - 19
So, the expression 8 + (x-3)³ simplifies to x³ - 19 when expanded.
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