Algebra (BIDMAS & Substitution)

Question 1

what does BIDMAS stand for

Answer 1

Brackets, Indices, Division, Multiplication, Addition, Subtraction.

Question 2

what is expanding brackets

Answer 2

Expanding brackets involves multiplying each term inside a set of brackets by the term outside the brackets. It’s a key step in simplifying algebraic expressions and solving equations.

Question 3

what is substitution in algebra

Answer 3

In algebra, substitution involves replacing letters (variables) in an expression or equation with specific values (numbers or other expressions) to evaluate, solve, or simplify. This process essentially means “swapping” a letter for its numerical value or another expression.

Question 4

what is an expression

Answer 4

An expression in math is a statement involving at least two different numbers (known or unknown) and at least one operation.

e.g
7x=3=4
7x+3 is an expression