Solve by factorization:
i) x2 + 8x + 15 =0
ii) 3y2 -14y +8 =0
4) There is an auditorium with
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i) x^2 + 8x + 15 = 0
x^2 + 5x + 3x + 15 = 0
x(x + 5) + 3(x + 5) = 0
(x + 5)(x + 3) = 0
either , x + 5 = 0 or x + 3 = 0
either x = - 5 or x = - 3
ii) 3y^2 - 14y + 8 = 0
3y^2 - (12 + 3)x + 8 = 0
3y^2 - 12y - 3y + 8 = 0
i) x^2 + 8x + 15 = 0
x^2 + 5x + 3x + 15 = 0
x(x + 5) + 3(x + 5) = 0
(x + 5)(x + 3) = 0
either , x + 5 = 0 or x + 3 = 0
either x = - 5 or x = - 3
ii) 3y^2 - 14y + 8 = 0
3y^2 - (12 + 3)x + 8 = 0
3y^2 - 12y - 3y + 8 = 0
absh90:
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