Factorise = (x+5)² - 4(x+5)
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Here is the solution-
(x+5)^2 - 4(x+5) - given
Using the identity of (a+b)^2, we’ll get,
(X^2 + 25+ 10x) - 4x -20
X^2 +10x -4x +25-20
X^2 + 6x + 5
Using splitting the mid term,we’ll get,
X^2 + 5x + x + 5
x(x+5) + 1(x+5)
(x+1) (x+5)
Answer- x= -1 and -5
(x+5)^2 - 4(x+5) - given
Using the identity of (a+b)^2, we’ll get,
(X^2 + 25+ 10x) - 4x -20
X^2 +10x -4x +25-20
X^2 + 6x + 5
Using splitting the mid term,we’ll get,
X^2 + 5x + x + 5
x(x+5) + 1(x+5)
(x+1) (x+5)
Answer- x= -1 and -5
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