please if anyone could answer these:
#1: complex number in stranded form:
1+3i/3+4i
#2: complete the square x^2-8x+4=0
#3: find the absolute value of (2-3i)
multiply by the conjugate of the denominator over itself. that is, to get $\displaystyle \frac {a + ib}{c + id}$ in standard form, multiply by $\displaystyle \frac {c - id}{c - id}$ and simplify
see here#2: complete the square x^2-8x+4=0
$\displaystyle |a + ib| = \sqrt{a^2 + b^2}$#3: find the absolute value of (2-3i)