Answer:
Step-by-step explanation:
∠A and∠B being complementary means m∠A+m∠B=90°
m∠A = (4x+6)° and m∠B = (4x+4)°
so:
4x+6 + 4x+4 = 90
8x + 10 = 90
8x = 80
x = 10
m∠A = (4•10+6)° = 46°
4x² + 12x + 8
4 × (x² + 3x + 2)
i think its irrational