Wwmm25
Multiply (x+5)(x+5)(x+5)= ?
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cwrw238
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first multiply (x + 5)(x + 5)
can you do this?
Wwmm25
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I put (x+5)(x+5) on my calculator and it gave 225
Wwmm25
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So I don't need to put on my calculator (x+5)*(x+5)?
Wwmm25
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Doing the three it gave 3375
cwrw238
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no this is algebra and you use whats known as the Distributive Law
first multiply the second parenthesis by x then by +5:
(x + 5)(x + 5)
= x(x + 5) + 5(x + 5)
= x*x + x*5 + 5*x + 5*5
= x^2 + 10x + 25
are you familiar with algebra?
Wwmm25
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Yea, Damn I need to do distribute property?
cwrw238
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yes
then second step is
(x + 5)(x^2 + 10x + 25)
= x(x^2 + 10x + 25) + 5(x^2 + 10x + 25)
cwrw238
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and simplify as I did before
Wwmm25
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Thanks bro.
cwrw238
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yw