=x(x+6)+3(x+6)=)x+3x+6 (ii) 6x2+7x−3=6x2+9x−2x−3 [by splitting middle term] (iii) 2x2−7x−15=2x2−10x+3x−15 [by splitting middle term] =2x(x−5)+3(x−5)=(2x+3)(x−5) (iv) 84−2r−2r2=−2(r2+r−42) =−(r2+7r−6r...
(i)2x3−9x2+12x−(9/2)=0 (ii)2x3−9x2+12x−3=0 View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium NCERT Solutions for Class 10 English Medium ...
5. Factor 2x2+x−15: We need two numbers that multiply to 2×−15=−30 and add to 1. These numbers are 6 and −5: 2x2+6x−5x−15=2x(x+3)−5(x+3)=(2x−5)(x+3)6. Final factorization: 2x3−3x2−17x+30=(x−2)(2x−5)(x+3) (ii) Factorize x3...