simplify (2x+7) ( 5x+9)-(4x+1) ( x-3)
Answers
Answered by
11
We have to simplify the value of
(2x+7) ( 5x+9)-(4x+1) ( x-3)
(2x+7) ( 5x+9)-(4x+1) ( x-3)
= 2x (5x + 9) + 7 (5x + 9) - [ 4x(x-3) + 1 (x-3)]
= 10x² + 18x + 35x + 63 - [4x² - 12x + x -3]
= 10x² + 53x + 63 - 4x² + 12x -x + 3
Putting like terms together
= 10x² - 4x² + 53x + 12x - x + 63 + 3
= 6x² + 65x - x + 66
= 6x² + 64x + 66
So, (2x+7) ( 5x+9)-(4x+1) ( x-3) = 6x² + 64x + 66
Know more :-
(a+ b)² = a² + b² + 2ab
( a - b )² = a² + b² - 2ab
( a + b )² + ( a - b)² = 2a² + 2b²
( a + b )² - ( a - b)² = 4ab
( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca
a² + b² = ( a + b)² - 2ab
(a + b )³ = a³ + b³ + 3ab ( a + b)
( a - b)³ = a³ - b³ - 3ab ( a - b)
If a + b + c = 0 then a³ + b³ + c³ = 3abc
Similar questions