1^3 + 2^3 = ( 1 +__ ) ^2
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Answered by
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1^3=1
2^3=8
8+1=9
therefore
(1+x)^2=9
1+x=squareroot of 9
1+x=3
x=3-1
x=2
2^3=8
8+1=9
therefore
(1+x)^2=9
1+x=squareroot of 9
1+x=3
x=3-1
x=2
siddhimamgain:
no that is not what i askked
Answered by
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Let the blank area will be filled with x
1³+2³=(1+x) ²
1+8=1²+x²+2x
9-1=x²+2x
0=x²+2x-8
0=x²+(4-2)x-8
0=x²+4x-2x-8
0=x(x+4) -2(x+4)
0=(x-2)(x+4)
Then,
x=2 OR x=-4
Taking positive value
Then, blank will filled with 2
I hope this will help you
1³+2³=(1+x) ²
1+8=1²+x²+2x
9-1=x²+2x
0=x²+2x-8
0=x²+(4-2)x-8
0=x²+4x-2x-8
0=x(x+4) -2(x+4)
0=(x-2)(x+4)
Then,
x=2 OR x=-4
Taking positive value
Then, blank will filled with 2
I hope this will help you
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