Solve the quadratic equation below
x2-64=0
2 answers:
x2-64=64
factorise with difference of two squares
(x-8)(X+8)=0
if you open the bracket you will have
X2+8x-8x-64=0
8x-8x is 0
X2+0-64
x2-64=0
Answer:
x=32
Step-by-step explanation:
first, you add 64 to both sides and you have: x2=64
second, you divide 2 on both sides to get x by itself, so 64 divided by 2 is 32
You might be interested in
First box (under 1) is 7, next box (above 12.5) is 6.5 and the last box is 16
try using the app Photomath for numbers 1-3!
Answer: z = -5/-3
Step-by-step explanation:
(3z−11)+(6−6z)
3z - 11 + 6 - 6z
- 6z + 3z - 11 + 6
- 3z - 5
z = -5/-3
14.6428 in decimal , in fraction 14 16/25
Answer:
Step-by-step explanation:
The stuff that is yellow is the answer!