X²-x-□=(×+2)(×-□) x²-1□x+1□=(×-2)(×-□) X²+□x+1□=(x+1)(x+2)X²-□x-24=(x-6)(x+□)
Answer (1)
Answer:Step-by-step explanation:X²-x-□=(×+2)(×-□)Find a value of the second □ such that when it is added to 2, the result will be -1, the coefficient of the second term in the full equation. X²-1x-□-3 when added to 2 would be - 1, so let's assume the second □ is 3, since it has a minus sign in front already. x²-x-□=(×+2)(×-3)Expand the second half:x²-x-□ = x² -x - 6So the first □ must be 6Use these steps in the other problems.x²-1□x+1□=(×-2)(×-□)x²-4x+4=(×-2)(×-2)[or x²-4x+4=(×-2)^2]x²+□x+1□=(x+1)(x+2)x²+3x+2=(x+1)(x+2)X²-□x-24=(x-6)(x+□)X²-2x-24=(x-6)(x+4)
