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 Simplify each expression. 49x4 28x 100n 90n 5) 6)...

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Simplify each expression. 49x4 28x 100n 90n 5) 6) 28n 7)28u3 8) 12x 24x 42x + 36 21n235n 70n 9) 30 6x 3 60 12r +60 12)  13) ? 7at10 k2 3k28 k25k14 14) a2 1la+30 v2 + 18v +80 2 100 x2 15x +50 xx 20 15) 16)2 18) 2 5x J17) ? x5y4 6x 8xy 8xy 6x 4 20) x 2(3x1 O 19) n2 n+5 7 8x 22) 21) 2n 2 3(x+1) x+7 4x(x+7) x + 1 24)17 . mr + 23) r+47 7a2 6a+6 6a+6 a6 v211v + 30 26) 51 v + 3 3(b6) 5 5(r +10) ++6r+ 10) b7 (b + 10(b7 27) 9n 4n24m2 n + 10 . 4n3 + 40n2 n10 n 10 29)5 n5 3n 15
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