Answer:
He did NOT apply the distributive property correctly for 8(1 + 2i)
x = ±10
Step-by-step explanation:
4x² - 400 = 0
Add 400 to both sides
4x² = 400
Divide both sides by 4
x² = 100
Take the square root of both sides
Remember that £ has a greater value compared to $ and vice versa.
