Simplify the expression:
(-2-+6i)

(-2-2i)(-4+6i) = 20 - 4i

Step-by-step explanation:

We have the expression:

(-2 - 2i)*(-4 + 6i)

the rule we need to know here is that i*i = -1

now, the first step is distribute the parentheses.

(-2 - 2i)*(-4 + 6i) = -2*-4 -2*6i - 2i*-4 - 2i*6i = 8 -12i + 8i -12*(i*i)

= 8 + (8 - 12)i +12 = 20 - 4i

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

you have to put the graph on here with the question

step-by-step explanation: