Answer:(2x + 9i)(2x - 9i)
Step-by-step explanation:
a^2 - b^2 = (a+b)(a-b)
a^2 + b^2 = (a+bi)(a-bi) = a^2 + abi - abi - b^2 i^2
But -b^2 i^2 = +b^2
Combine like terms
x^2 + 2x + 3 + 3x^2 + x + 1
4x^2 + 3x + 4
Answer:
Y-3/5x+2
Step-by-step explanation:
Answer:
(1,4) and (9,9)
Step-by-step explanation:
they form a straight line -- you can check with a ruler when going through these points.