1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ollegr [7]
3 years ago
13

Z^2 -6z+9=0 Factor and solve

Mathematics
1 answer:
Ymorist [56]3 years ago
8 0
Factor because if we have
yz=0 then we can assume y and/or z=0

so factor
so the easiest way is to find what 2 numbers add to -6 and multiply to get 9 so
we know that they must be both - because we must have x+x=(-) and x^2=+ so therefor they must be negative
factors of 9=3 and 3 so
-3 and -3
-3+-3=-6 perfect

(z-3)(z-3)=0

set each to zero
z-3=0
add 3
z=3


z=3 is the answer
You might be interested in
Simplify 9-2 divided by 1/3 •3 + 18
V125BC [204]
Hello!

<span>9 - 2 x 3 x 3 + 18

9 - 18 + 18

=9
9 is your answer.
Enjoy.

Brainliest please?
<span>
</span></span>
8 0
3 years ago
Read 2 more answers
Which shape is always an isosceles triangle?
Lady_Fox [76]
Only triangles , there isosceles if they both have two congruent sides & angles !
8 0
3 years ago
I need to know if the answer to number 9. Is correct
slava [35]
The answer to number 9 would be 43. 

Since it tells you that there is a straight angle that would equal 180. So I added up 61 30 and 46. I got 137. Then subtracted 137 from 180 and got 43.
8 0
3 years ago
Numbers like 10 100 1000 and so on are called
Afina-wow [57]
Powers of ten! is the answer
4 0
3 years ago
Read 2 more answers
Please help I would appreciate it
zimovet [89]
I believ it’s 6. I’m not sure
5 0
3 years ago
Other questions:
  • Can someone please simply this and show the work ?
    15·2 answers
  • A trapezoid is quadrilateral with at least one pair of parallel sides. The quadrilateral shown is a trapezoid. If m&lt;1 = 90* a
    13·1 answer
  • A random experiment consists of tossing a fair coin five times and recording the number of tails. What is the sample space?
    8·1 answer
  • What’s the slope for this equation ?
    5·2 answers
  • Find the perimeter and area of isosceles trapezoid EFGH. <br> A=1/2(b1+b2)•h
    10·1 answer
  • Find the volume of the irregular figure
    11·1 answer
  • Reduce the ratio to the lowest term: 60 : 75
    12·2 answers
  • Solving y=5/2x-1 and y=-1/2x+5 on a graph
    13·1 answer
  • 7×(5-2)=7×_ = _ what is the answer​
    13·2 answers
  • Two equations with the solution of (3,6)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!