Asked by Jessica Shatteen on May 21, 2024

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Find the least common multiple of the expressions. 5y2+9y−2,15y2−3y5 y ^ { 2 } + 9 y - 2,15 y ^ { 2 } - 3 y5y2+9y2,15y23y

A) 3y(y+2) (5y−1) 3 y ( y + 2 ) ( 5 y - 1 ) 3y(y+2) (5y1)
B) 20y2+6y−220 y ^ { 2 } + 6 y - 220y2+6y2
C) (5y−1) (y+2) ( 5 y - 1 ) ( y + 2 ) (5y1) (y+2)
D) 3y(5y−1) 3 y ( 5 y - 1 ) 3y(5y1)
E) 75y2+27y−275 y ^ { 2 } + 27 y - 275y2+27y2

Least Common Multiple

The smallest positive integer that is a multiple of two or more integers.

Expressions

Mathematical phrases that can represent numbers, operations, and/or variables but do not include an equality sign.

  • Gain proficiency in utilizing least common multiples and denominators when dealing with algebraic expressions.
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DL
Daisy LegareMay 24, 2024
Final Answer :
A
Explanation :
The least common multiple (LCM) of two algebraic expressions is the smallest expression that both original expressions can divide into. To find the LCM, we factor each expression and then take the highest power of each factor that appears.The first expression, 5y2+9y−25y^2 + 9y - 25y2+9y2 , can be factored into (5y−1)(y+2)(5y - 1)(y + 2)(5y1)(y+2) .The second expression, 15y2−3y15y^2 - 3y15y23y , can be factored out by taking 3y3y3y common, resulting in 3y(5y−1)3y(5y - 1)3y(5y1) .The LCM will include all unique factors from both expressions, taken to the highest power they appear in any one expression. Thus, the LCM is 3y(5y−1)(y+2)3y(5y - 1)(y + 2)3y(5y1)(y+2) , which matches choice A.