Please factorise 3 a) Please do it it's urgent
Divide using factorisation .
If you don't know pleasedon't answer or else I will report your answer.

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.