How do you factor the expression #2x^2-9x+4#?

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Answer 1 · 2016-02-19T12:39:59

#(2x-1)(x-4)#

Find 2 values that add to give -9 and multiply to give 2 x 4 = 8.

These values are -1 and -8.

Split the x's.

#2x^2-8x-x+4#

Factorise each half.

#2x(x-4)-1(x-4)#

#(2x-1)(x-4)#