Which expression is equivalent to 6x^2 - x - 1?

(3x + 1)(2x - 1) AC method: 6 \cdot (-1) = -6. Two numbers multiplying to -6, summing to -1: -3 and 2. 6x^2 - 3x + 2x - 1 = 3x(2x-1) + 1(2x-1) = (3x+1)(2x-1).

school

Acemy

Equivalent Expressions

SAT Math· difficulty 4/5

6x^2 - x - 1

A
$(3x + 1)(2x - 1)$
check_circle
B
$(6x + 1)(x - 1)$
C
$(6x - 1)(x + 1)$
D
$(3x - 1)(2x + 1)$

Explanation

6 \cdot (-1) = -6

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forward Predict my AP score

Related questions