(a)factorize-
1. 1-18y-63y
2. y²-2y-15
(b) factorize the following in cubic polynomials-
1. x³-3x²-9x+5
2. x³-6x²+11x-6
3. 2y²+y²-2y-+1
4. x³+13x²+32x+20
5. x3+x2-4x-4
6. 3x³-x²-3x+1
Mohanchandrabhatt:
Please chose answer as brillianist
Answers
Answered by
13
(a)1. 1 - 18y - 63y²
By middle term splitting
1 - 21y + 3y - 63y
1 ( 1 - 21y ) + 3y ( 1 - 21y )
( 1 - 21y ) ( 1 + 3y )
(a)2. y² - 2y -15
By middle term splitting
y² - 5y + 3y - 15
y ( y - 5 ) + 3 ( y - 5 )
( y + 3 ) ( y - 5 )
(b) question all parts are done in the images except part 1 , part 3
(b) 3. 2y² + y²- 2y - (+ 1 )
3y² - 2y - 1
By splitting middle term
3y² - 3y + 1y - 1
3y ( y - 1 ) +1 ( y - 1 )
( 3y + 1 ) ( y - 1 )
By middle term splitting
1 - 21y + 3y - 63y
1 ( 1 - 21y ) + 3y ( 1 - 21y )
( 1 - 21y ) ( 1 + 3y )
(a)2. y² - 2y -15
By middle term splitting
y² - 5y + 3y - 15
y ( y - 5 ) + 3 ( y - 5 )
( y + 3 ) ( y - 5 )
(b) question all parts are done in the images except part 1 , part 3
(b) 3. 2y² + y²- 2y - (+ 1 )
3y² - 2y - 1
By splitting middle term
3y² - 3y + 1y - 1
3y ( y - 1 ) +1 ( y - 1 )
( 3y + 1 ) ( y - 1 )
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Answered by
5
Answer:
Answer no 1. 1-18y-63y is
Step-by-step explanati
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