x times 100-2x times 70-2x
2007-03-20 14:28:10 · 3 answers · asked by fachizzzzle 3 in Education & Reference ➔ Homework Help
(x)(100-2x)(70-2x)
(x)(7000 -200x -140x+4x^2)
Change to standard form, combine like terms
(x)(4x^2 -340x +7000)
factor out GCF
4x(x^2 -85x +1750)
4x(x - 50)(x - 35)
x= 0, 50, 35
Ta Da!
2007-03-20 14:39:46 · answer #1 · answered by K. 3 · 0⤊ 0⤋
If there are no parentheses in the problem why are you putting them there? Read from left to right....x times 100=100x......2x times 70=140x using order of operations, multiplication comes first. Now combine terms....100x-140x-2x= -42x
2007-03-20 22:41:42 · answer #2 · answered by dpirsq2 5 · 0⤊ 0⤋
x(100-2x)(70-2x)
So first you want to take whats in the parenthesis and foil it out:
x(700 -140x-200x-4x^2)
The multiply all that by the x:
700x - 340x^2 - 4x^3
2007-03-20 21:33:49 · answer #3 · answered by n_m_young 4 · 0⤊ 0⤋