Math
posted by Sam .
multiply:
a)(2x+5)(2x5) b) 4x^3(6x3x^4)
show your work. please help me!!

a )
( 2 x + 5 )( 2 x  5 ) =
2 x * 2 x + 2 x * 5  5 * 2 x  5 * 5 =
4 x ^ 2 + 10 x  10 x  25 =
4 x ^ 2  25
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