How to Find the Area of ​​a Curve with Integrals

Number 1 Determine the area limited by curve y = x², X-axis, line x = 1 and line x = 5 Number 2 Determine the area limited by curve y = x² + 2x and line y = x + 6 Number 3 Determine the area limited by curve y = 10 - x², line x = 5, line x = 1 and X-axis