Simplify (-4 + 5i) + 2(1 + 3i). enter your answer in the form a + bi.

(-4 + 5i) + 2(1 + 3i)

(-4 + 5i) + 2 + 6i

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.