.x²-5x+7 आणि 2x² +4 यांच्या बेरजेत कोणती बहुपदी मिळवल्यास 5x² +4x+3 ही बहुपदी
मिळेल?
(1) 2x²+9x-8 (2) 3x²+8x-8
(3) 2x²-9x-8 (4) 4x² +9x-8.
Answers
Answered by
3
= (x² - 5x + 7) + (2x² + 4)
= x² - 5x + 7 + 2x² + 4
= x² + 2x² - 5x + 7 + 4
= 3x² - 5x + 11
now ,
we have to figure find what should be added to above expression so that it will become
5x² +4x + 3 .
=(5x² +4x+3) - (3x² - 5x + 11)
= 5x² - 3x² + 4x + 5x + 3 - 11
= 2x² + 9x - 8 .
Option ' 1 ' is right .
पर्याय ' १ ' बरोबर आहे .
Similar questions