tolong bantu no 6-10

7. f (x)= 4x+2 = 4(-2)+2 =-6
8. f (x)=10(x)-2 = 10(-3)-2 =-32
9. P-2Q = (4x^2+3) - 2 (5x-x^2) = (4x^2+3) - 10x + 2x^2 = 6x^2 - 7x

6.tripel Pythagoras
3,4,5 maka jawabannya 3 karena
QR=5kuadrat-4kuadrat
=25-16
=akardari9
=3
7.f(-2)=4(-2)+2
=-8+2
=-6
8.f(-3)=10(-3)-2
=-30-2
=-32
9.P-2Q
=4Xkuadrat+3X-2(5X-Xkuadrat)
=4Xkuadrat+3X-10X+2Xkuadra
=6Xkuadrat-7X
10. Pythagoras =3,4,5
Keliling segitiga=a+b+c
=3+4+5
=12

#semoga membantu;-)