To subtract algebraic expressions in GCSE Mathematics, just follow these easy steps:
Know the parts: Algebraic expressions have different parts like variables, coefficients, and constants. For example, in the expression (3x + 5 - 2x), (3x) and (-2x) are the parts that include the variable (x).
Group similar terms: Look for and group terms that are alike. In the example (4x^2 + 3x - 2 - (2x^2 + x - 5)), the similar terms are (4x^2) and (-2x^2), and (3x) and (-x).
Change the signs: When you subtract, remember to flip the signs of each term in the second part. So, ( -(2x^2 + x - 5)) changes to (-2x^2 - x + 5).
Put it all together: Now, combine the similar terms. For example, (4x^2 - 2x^2 + 3x - x - 2 + 5) can be simplified to (2x^2 + 2x + 3).
By practicing these steps, students can get better at algebra. Studies show that good practice can help improve problem-solving skills in algebra by up to 30%!
To subtract algebraic expressions in GCSE Mathematics, just follow these easy steps:
Know the parts: Algebraic expressions have different parts like variables, coefficients, and constants. For example, in the expression (3x + 5 - 2x), (3x) and (-2x) are the parts that include the variable (x).
Group similar terms: Look for and group terms that are alike. In the example (4x^2 + 3x - 2 - (2x^2 + x - 5)), the similar terms are (4x^2) and (-2x^2), and (3x) and (-x).
Change the signs: When you subtract, remember to flip the signs of each term in the second part. So, ( -(2x^2 + x - 5)) changes to (-2x^2 - x + 5).
Put it all together: Now, combine the similar terms. For example, (4x^2 - 2x^2 + 3x - x - 2 + 5) can be simplified to (2x^2 + 2x + 3).
By practicing these steps, students can get better at algebra. Studies show that good practice can help improve problem-solving skills in algebra by up to 30%!