Задача №241
Решите уравнение:
а) (х - 1)(х - 7) = 0; г) (х + 1)(х - 1)(х - 5) = 0;
б) (х + 2)(х - 9) = 0; д) х(х + 3)(х + 3) = 0;
в) (х - 11)(x + 6) = 0; е) (х - 4)(х + 9)(х + 13) = 0.
Решение задачи №241:
1241-1 а) (х - 1) (х - 7) = 0: *-1 = 0=»* = 1, х — 7 = 0=>х = 7=>х = 1;7.
б) (х + 2) (х - 9) = 0: х + 2 = 0 => х = -2, х - 9 = = 0=^х = 9=>х = —2; 9.
в) (х - 11) (х + 6) = 0: х — 11 = 0 =>• х = И, х + 6 = = 0=ф-х = —6=>х = -6: И.
г) (х + 1) (х — 1) (х — 5) = 0, х + 1 = 0 => х = -1, х — 1 =0=>-х = 1, х —5 = 0=>х = 5=»х=—1; 1,5.
д) х- (х + 3) (х + 3) = 0: х = 0, х + 3 = 0 => х = — 3 =>• => х = —3; 0.
е) (х - 4) (х + 9) (х + 13) = 0: х - 4 = 0 =>¦ х = 4, х + + 9 = 0 => х = —9, х + 13 = 0 => х = —13 =>• х = —13; -9; 4.
Оцените это ГДЗ:
Error: Table './admin_math_fivestar/ratings' is marked as crashed and last (automatic?) repair failed | 
