Answer:
1 whole
Step-by-step explanation:
A+bi is a complex number
(3+2i)(a+bi)=17+7i
remember
i²=-1
so
expand and solve
a is the ral part
bi is the imaginary part
ok so
if Ac+Be=dc+fe where c=c and e=e then A=d and B=f
(3+2i)(a+bi)=17+7i
expand/distribute/FOIL
3a+2ai+3bi+2bi²=17+7i
3a+2bi+2ai+2bi=17+7i
3a-2b+2ai+2bi=17+7i
real parts are 3a-2b
imaginary is 2ai+2bi
so
3a-2b=17 and
2ai+2bi=7i
we need to solve
2nd equation, divide both sides by i
2a+2b=7
multiply by -1 and add to other equation
3a+2b=17
<u>-2a-2b=-7 +</u>
1a+0b=10
a=10
subsitue
2a+2b=7
2(10)+2b=7
20+2b=7
2b=-13
b=-13/2
the complex number is
10-(13/2)i or
10-6.5i
Answer:
Step-by-step explanation:
3. Find the measure of ZC. 4. Find the value of x. 85°. 40+36 t C +90=180 ... 2x+ 85++35=360/35. 3x + 120 360. 3x=240. X=80. A. B. 5. Two angles are ... If 2 parallel lines are cut by a ... 4. Find y if m27 = 68 and m26 = 3y - 2. If 2. 11 lines are cut by a transversal, ... An auxiliary Line is sometimes useful when solving for.