The answer I Given
We want to find value of a and b when x = 10.
We are putting x = 10 in a and b.
So,
�
=
5
×
10
2
2
�
=
5
×
100
2
�
=
5
×
50
�
=
250
a=
2
5×10
2
a=
2
5×100
a=5×50
a=250
and
�
=
2
×
10
2
(
10
−
5
)
10
×
10
�
=
2
×
100
×
5
100
�
=
2
×
5
�
=
10
b=
10×10
2×10
2
(10−5)
b=
100
2×100×5
b=2×5
b=10
This is a problem of value putting part of Algebra.
Some important Algebra formulas:
(a + b)² = a² + 2ab + b²
(a − b)² = a² − 2ab − b²
(a + b)³ = a³ + 3a²b + 3ab² + b³
(a - b)³ = a³ - 3a²b + 3ab² - b³
a³ + b³ = (a + b)³ − 3ab(a + b)
a³ - b³ = (a -b)³ + 3ab(a - b)
a² − b² = (a + b)(a − b)
a² + b² = (a + b)² − 2ab
a² + b² = (a − b)² + 2ab
a³ − b³ = (a − b)(a² + ab + b²)
a³ + b³ = (a + b)(a² − ab + b²)