Problem

Express as a trinomial.
\[
(x+4)(2 x+9)
\]

Answer

Expert–verified
Hide Steps
Answer

\( 2x^2 + 9x + 8x + 36 = 2x^2 + 17x + 36 \)

Steps

Step 1 :\( (x+4)(2x+9) = x(2x+9) + 4(2x+9) \)

Step 2 :\( x(2x+9) + 4(2x+9) = 2x^2 + 9x + 8x + 36 \)

Step 3 :\( 2x^2 + 9x + 8x + 36 = 2x^2 + 17x + 36 \)

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