Answer:
see below
Step-by-step explanation:
(2x + i)(2x – i)
FOIL
first 2x*2x =4x^2
outer -i * 2x = 2x i
inner i * 2x = 2x i
last i * -i = -i^2 and i^2 = -1 so - (i^2 ) = - (-1) = 1
Add together
4x^2 + 2xi -2x i +1
Combine like terms
4x^2 +1
Answer:5. 291503
Step-by-step explanation:
√28
2√7
5. 291503
Answer:
yes
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
4 goes perfectly into 8 twice and 12 three times