Calcul Littéral 6-7 Réduire une expression

Key Takeaways

Hello everyone, in this video we're going to learn how to simplify an expression. So, this is a key word you need to know: simplifying an expression. First, here's what you need to know: x + 6 equals 2x. There's a rule: you add the x's together, you add the y's together, and the numbers, the constants, are left separate. Look here, you have x, y, and constants. We add the x's together, and the y's have long been constants. All the numerical values ​​on their own are left aside. So, x + 4x, how many is that? That makes 5. y/y + 8y shows how many times there are. Here you have a constant, which is 8, which we leave separate. From there, we do the same thing, but we're going to identify and put the x's together: 7x + 6y. In fact, how many times does that make? The y's are more than y. Then the constants: -3 + 13. Well, we're going to calculate 13 - 3 - 3. Adding 3 is the same; that will give you 10. It's called a simplified expression, but be careful, there are notations: x + 6 ≥ 2x, x + x + x, these are 3x, but x ≥ x ≥ x ≥ 3x cubed, x ≥ ...