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olga2289 [7]
3 years ago
7

Solve the quadratic equation below x2-64=0

Mathematics
2 answers:
erica [24]3 years ago
7 0

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

Montano1993 [528]3 years ago
4 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

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4 0
3 years ago
What is the solution of the system?
damaskus [11]
3x +2y= 11 ----1
x -2 = -4y   ---- 2

Equation 2 times by 3
3x -6 = -12y

Subracting 2-1
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Leaving 
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y= -1/2

Hence 
B. is the solution

PS, If you rate this as "Brainiest" that would be most appreciated

7 0
3 years ago
Read 2 more answers
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