Answer:1 a 6x
b (x+4)(3x+2)
c xy(14+y³-4xy)/2
I have only done the first 3 I hope it helps
5 and 6 (5 being the square root of 25 and 6 being the square root of 36, which are the closest perfect squares)
Answer:
-4+(-9)
Step-by-step explanation:
You change the minus signs into and addition sign and make the number a negative.
Answer:
BC ≈ 19.4 cm
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos71° =
=
=
( multiply both sides by BC )
BC × cos71° = 6.3 ( divide both sides by cos71° )
BC =
≈ 19.4 cm ( to 3 significant figures )