Réponse:
1.
h(4)=10-2(4)
= 10-8
h(4)= 2
h(3)=10-2(3)
= 10-6
h(3)=4
2.
h(0)=10-2x
=> 10-2x=0
=> -2x=-10
=> x=-10/-2
=> x=5
h(4)=10-2x
=> 10-2x=4
=> -2x=4-10
=> -2x=-6
=> x=-6/-2
=> x=3
h(-5)=10-2x
=> 10-2x=-5
=> -2x=-5-10
=> -2x=-15
=> x=-15/-2
=> x=15/2
h(√2)=10-2x
=> 10-2x=√2
=> -2x=√2-10
=> x= √2/-2 -10/-2
=> x= -√2/2 +5