Sofia has been saving money to buy a new computer for her birthday sofias mother gave her twice what she had already save now she has $135 using x to represent the money sofia saved before her mothers present write an equation that represents the situation

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.