Factorise x³+13x²+32x+20
Answers
Answered by
1
Answer:
=66
Step-by-step explanation:
f(x) = x³+13x²+32x+20
f(1) = 1³+13(1²)+32(1)+20
= 1+13+32+20
= 14+52
= 66
I hope it is helpful to you
Answered by
0
Answer:
( x - 1 ) ( x + 2 ) ( x + 10 )
Step-by-step explanation:
x³ + 13x² + 32x + 20
= x³+ x² + 12x² + 12x + 20x + 20
= x² (x + 1) + 12x (x + 1) + 20 (x + 1)
= (x – 1) (x² + 12x + 20)
= (x – 1) (x² + 10x + 2x + 20)
= (x – 1) [x (x + 10) + 2 (x + 10)]
= (x – 1) (x + 2) (x + 10)
Therefore, the value of x³ + 13x² + 32x + 20 is (x – 1) (x + 2) (x + 10)
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