How do you multiply $(5x+9)(2x-3)$ ?

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Answer 1 · 2017-08-11T06:45:17

Similar to how you multiply numbers

$(5x+9)(2x-3) = (5\times2)x^2-(5\times3)x+(9\times2)x-(9\times3)$
$= 10x^2-15x+18x-27$
$=10x^2+3x-27$

How do you multiply (5x+9)(2x-3)(5x+9)(2x-3)?