Question

x2+x-7,para x=½ me ajudem pfvr

Answer 1

x²+ x - 7, para x=1/2

(1/2)² + 1/2 - 7

1/4 + 1/2 - 7

mmc: 4

1/4:4 + 1/2:4 -7:4 = -25/4