Respuesta :

24: x2-7x+12

x2-3x-4x+12

x(x-3)-4(x-3)

final answer: (x-3)(x-4)

25: x2-9x+18

x2-6x-3x+18

x(x-6)-3(x-6)

final answer: (x-6)(x-3)

26: x2-6x+8

x2-4x-2x+8

x(x-4)-2(x-4)

final answer: (x-4)(x-2)

Answer:

Step-by-step explanation:

25.

-2x+8=x²-9x+18

or x²-7x+10=0

x²-2x-5x+10=0

x(x-2)-5(x-2)=0

(x-2)(x-5)=0

x=2,5

when x=2

y=-2×2+8=4

so point is (2,4)

when x=5

y=-2×5+8=-2

point is (5,-2)

point of intersection of the system is (2,4) and (5,-2)

similarly you can solve 24th and 26th.

Otras preguntas