by middle term splitting find 21x^2+5x-6
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Answered by
1
Answer:
21x^2+7x-2x-6
=7x(3x+1)-2(3x+1)
=(7x-2)(3x+1)
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Answered by
3
hola...
this answer is yours....
21×6 = 126
needing calculator......
how ever I make it....
21x^2 + 14x -9x -6
21x(x+14/21)-9(x+6/9)
21x(x+2/3)-9(x+2/3)
21x - 9 = 0
21x = 9
x = 21/9
x = 7/3 ........1root
or
x+2/3 = 0
x = -2/3.......2root
x = 7/3 or x = -2/3
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