Answer
( 18 + 3$y^{2}$ ) ( 5-x)
Work Step by Step
90 + 15$y^{2}$ - 18x -3x$y^{2}$
( 90 - 18 x ) + (15$y^{2}$ -3x$y^{2}$ ) group term
18( 5 - x) + 3$y^{2}$( 5 - x) factor out GCF from each grouping
( 18 + 3$y^{2}$ ) ( 5-x)
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