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Simplify the expression $x\left(10-x\right)=40$

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Tutorial - Solving logarithmic equations ex 10, log(2x)+log(x-5)=2

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Algebra 2 - Learn to solve a rational equation by multiplying by the LCD (15/x)+((9x-7)/(x+2))=9

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Algebra 2 - Solve rational expressions by multiplying the LCD on both sides x/2x+7 = (x‐5/x‐1)

https://www.youtube.com/watch?v=h2VlRHZhIBg

Tutorial - Simplify Expressions Dividing simplify numerator, (3 x 2 + 4)/2

https://www.youtube.com/watch?v=5JklSCAtMrk

Algebra 2 - Simplifying a radical expression by multiplying by conjugate, sqrt(x) / (sqrt(x) + 3)

https://www.youtube.com/watch?v=S1A48ASMoYU

Tutorial - Simplifying complex fractions ex 33, ((x/3) -6) / (10+(4/x))

https://www.youtube.com/watch?v=kIJ8S9gVJ6Q

Main Topic: Algebraic expressions

An algebraic expression is a group of terms that are separated by $+$ or $-$ signs.

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