factorize this pls..
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laxmita:
pls ans i need it urgently
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(x2-4x)(x2-4x+1)-20
=a(a-1)-20 [x2-4x=a has taken]
=a2-a-20
=a2-5a+4a-20
=a(a-5)+4(a-5)
= ( a-5) ( a-4)
=(x2-4x-5)(x2-4x-4) [values are inputed]
=(x2-5x+x-5)(x2-4x-4)
=x(x-5)+1(x-5) (x2-4x-4)
=(x-5)(x+1)(x2-4x-4)
hope it can help!!!
=a(a-1)-20 [x2-4x=a has taken]
=a2-a-20
=a2-5a+4a-20
=a(a-5)+4(a-5)
= ( a-5) ( a-4)
=(x2-4x-5)(x2-4x-4) [values are inputed]
=(x2-5x+x-5)(x2-4x-4)
=x(x-5)+1(x-5) (x2-4x-4)
=(x-5)(x+1)(x2-4x-4)
hope it can help!!!
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0
See in the picture attached
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