factorize the following please it's urgent
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Answered by
1
Answer:
Step-by-step explanation:
Given,
a square - 25a + 84
= a square - 4a - 21a + 84 [∵ 1× 84 = 84 , (-4)×(-21)= 84, ( -4 -21 = -25) ]
= a ( a - 4 ) -21 (a - 4 ) (∵ + × - = - , - × - = + )
= ( a - 4 ) ( a - 21 ) is the answer.
Answered by
0
Answer:
a²-21a-4a+84
(a-21)(a-4)
Step-by-step explanation:
i hope this is helpful for you
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