B and c are correct because you use divison and multiplication to get the right answer and the right answer is 99cm
Answer:
±625
Step-by-step explanation:


±625
Answer:
U = x + 3 and V = 7
Step-by-step explanation:
Let U = x + 3 and V = 7, then:
=> (x + 3)^2 + 14(x + 3) + 49
= (x + 3)^2 + 2*7*(x + 3) + 7^2
= U^2 + 2UV + V^2
= (U + V)^2
(correct)