Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to do your algebra homework using online tools [title] Navigate to an online equation calculator. [step] Popular ones include symbolab or mathway algebra calculators. These particular calculators are browser-based, so you are not required to download anything.

Ending1: Instead, you may choose to download the tools yourself. With both kinds of calculators, you can divide the equation into 2 equal parts, but don't worry about mapping out what the 20 different versions are. Ending2: [title] Drop the radius of a number into the equation, and then set it to 200. [step] Then set the radius (which is the distance from the center of a cell to another square on your screen) to 100. Ending3: However, you will not lose anything if you guess right-up. [substeps] You can find what works on excel only by looking at the icon of a scale. Ending4: [substeps] These calculators can also help with higher level math, such as trigonometry or calculus. [title] Enter practice problems into the calculator.

Answer format: ending1/ending2/ending3/ending4