3 years ago

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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