factorise 15x^2-19x+22
Anonymous:
there should be -20 check ur question if there is not - 20 then this would have no real roots
22*
it would since 30 and 11 make 19. thus the condition for splitting the middle term is justified and complete
you only need splitting
when subtracted* 30 and 11 make 19
but this would have no real roots
Answers
Answered by
3
Equation is
15x^2 - 19x +22
D = b2- 4ac
D = (-19)^2 - 4×15×22
D = 361- 1320.
D will be negative thus it will not have any real roots.
and it can't be factorised since
30 - 11 make +19 and product will be -330.
and 11- 30 makes -19 and product will be again -330.
but it should be positive.
15x^2 - 19x +22
D = b2- 4ac
D = (-19)^2 - 4×15×22
D = 361- 1320.
D will be negative thus it will not have any real roots.
and it can't be factorised since
30 - 11 make +19 and product will be -330.
and 11- 30 makes -19 and product will be again -330.
but it should be positive.
Answered by
0
15x2-19x-22
15x²-30x+11x-22
15x(x-2)+11(x-2)
(x-2)(15x+11)
Similar questions