Thabo rounded the number of marbles to the nearets 5.His answer was 340 write down 2 possible number for the actual number of marbles.

answer: option c. (x – 8y)(x – 8y)

explanation:

1) note that the expression has 3 terms, so it is a trinomial.

2) note that the first and third terms are perfect squares:

3) note that the second term is equal to double of the product of the square roots of the first and second terms:

4) in consequence, the trinomial is a perfect square trinonial, which means that its factored form is a square binomial:

5) finally, note that (x - 8y)² = (x - 8y) (x - 8y) which is the choice c.