Answer: 2 rational solutions
Step-by-step explanation:
When the discriminant, b² + 2a, is greater than 0, there are two real solutions. 49 is the perfect square of 7, so the solutions are also rational: plus and minus 7
Answer:
according to my calculations
cheese
x₍ₙ₎ = x₍₁₎ * (-5)ⁿ⁻¹
x₍₁₎ = -2
x₍₂₎ = (-2) x (-5)²⁻¹ = (-2) x (-5) = 10
x₍₃₎ = (-2) x (-5)³⁻¹ = (-2) x (-5)² = -50
Answer:21
Step-by-step explanation:1-63=90
