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Earn +20 ptsQ: 8u 3u plus 35
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Whats 8u equal 3u plus 35?
It is a linear equation in the variable u.
How do you simplify 8u plus 2u minus 3u?
add 8 and 2 then take away 3. even u should get 7u.
15 equals -15-8u?
For a suitable value of u, it can be.
How do you factor 8u to the 5 power y to the 9 power 4u to the 9 power w to the 2 power y to the 8 power?
Which can be factored by multiplying five 2's, fourteen u's, two w's and seventeen y's.
How do you solve four to the x power minus two to the x plus one power all equaling 15?
So you have (4^(x-2))^(x+1)=15. Using a law of exponents (b^a)^c=b^(a*c) and 4=2^2, you get 4^((x-2)*(x+1))=15=2^(2(x-2)(x+1)). Take log base two and use the rule about logs of products you get 2(x-2)(x+1)=Log_2(15) Simplifying and substituting u for Log_2(15), 2x^2-2x-4=u, which means 2x^2-2x-(4+u)=0, using quadratic formula. X=(1/4)(2(+or-)sqrt(4-4*2*(-4-u))) or (1/2) plus or minus (1/4)(sqrt(36+8u)) Where sqrt(b) is the square root of b
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