Question

Abdullah expands (x - 3)2 and gets the answer x2 - 9. Describe what he has done wrong.

Answer 1

Answer:

He squared the numbers inside without following the appropriate rule

Step-by-step explanation:

what he should have done

$(x-3)^2\\= x^2 - 2 *x*3+3^2\\= x^2-6x+9$