Which expression is prime?a.x2 + 3x + 2b.x2 + 8x + 7c.x2 + 8x - 22d.x2 + 12x + 27?
Accepted Solution
A:
Prime means it cannot be factored any more. the answer is C A=(x+1)(x+2) B=(x+1)(x+7) D=(x+3)(x+9) But C cannot be factored. If it were x²+9x-22, it would be (x+11)(x-2). but with 8x, it doesn't work.