Question

Me ajudem pofavoooo​

Answer 1

5x² +3x +7 .......x-1=0 => x=1

R=5.(1)² +3.(1) +7

R= 5 +3 +7 = 15 ✓

3x⁴ +2x³ +x² +7x +1........x+1=0 => x=-1

R=3.(-1)⁴ +2.(-1)³ +7(-1) +1

R=3(1) +2(-1) -7 +1

R=3 -2 -6 = -5 ✓