WebSal distributed the -2 over the quantity in the second parenthesis. In other words he multiplied -2 * (10 +4y), which you do by multiplying the -2 times EVERYTHING in the parentheses. So -2*10=-20 and -2*4y=-8y. Adding those together yields: -20+ -8y = -20-8y. 9 comments ( 78 votes) Flag Show more... Zachary popke 10 years ago WebMultiplication, Addition, and Subtraction. For addition and subtraction, use the standard + and – symbols respectively. For multiplication, use the * symbol. A * symbol is optional when multiplying a number by a variable. For instance: 2 * x can also be entered as 2x. Similarly, 2 * (x + 5) can. also be entered as 2 (x + 5); 2x * (5) can be ...
Simplifying Expressions – Tricks & Examples - Story of Mathematics
WebRevise how to simplify algebra using skills of expanding brackets and factorising expressions with this BBC Bitesize GCSE Maths Edexcel guide. WebSimplify the following expression: (−5x −2 y)(−2x −3 y 2) Again, I can work either of two ways: multiply first and then handle the negative exponents, or else handle the exponents and then multiply the resulting fractions. I'll show both ways. multiplying first: doing the exponents first: earth 27 supergirl
Radicals Calculator - Symbolab
WebThere are multiple ways to represent a trigonometric expression. Verifying the identities illustrates how expressions can be rewritten to simplify a problem. Simplifying one side of the equation to equal the other side is a method for verifying an identity. See Example and Example . The approach to verifying an identity depends on the nature of ... WebLet’s simplify this step by step. Step 1: Combine the. x. x x -variables within the inner parenthesis. Step 2: Distribute the constant. 2. 2 2 into the terms of the inner parenthesis. Step 3: Combine like terms as much as possible inside the square bracket symbol. Identify like terms first before combining. WebOn this screen you can simplify any expression according to the basic rules of algebra. For a different operation, press and select the desired operation. How do I factor an expression? If an expression is a factorable sum (e.g. x 2-b 4), the Quickmath solver will factor it for you. Note that the expression should be completely simplified prior ... earth 27 superboy