Mohon bantuannya dikasih cara ​

Jawaban:

7. 3x^2 – 2x + 4 = 0

8. a. (x-3) (x-2) = 0

(i)x-3=0 (ii)x-2=0

x=0+3 x = 0+2

x=3 x = 2

Jadi , himpunan penyelesaian(HP)=(3,2)

b. (x+5) (x-3)= 0

(i) x+5 = 0 (ii) x-3=0

x= 0-5 x=0+3

x= -5 x=3

Jadi,HP = {(-5,3)}

c. (x+6) (x-2) = 0

(i)x+6=0 (ii)x-2=0

x=0-6 x=0+2

x= -6 x=2

Jadi,HP={(-6,2)}

9. x^2 – 7x +10 = 0

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

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

x=0+2 x = 0+5

x=2 x = 5

Jadi , HP= {(2,5)}

10. 2x^2 + 2 = x^2 +3x

(2x^2- x^2) – 3x + 2 = 0

x^2 -3x + 2 = 0

Keterangn : ^2 = kwadrat

maaf jika salah, semoga mmbantu