Subject: Mathematics
Book: Maths Mastery
PEMDAS (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) or BODMAS (Brackets, Orders, Division/Multiplication, Addition/Subtraction) clarifies the sequence in which to tackle operations. For example, to evaluate 3 + 2 × (5 – 2)², start inside parentheses: (5 – 2) = 3, then exponents: 3² = 9, next multiplication: 2 × 9 = 18, and finally addition: 3 + 18 = 21. Following this strict hierarchy prevents confusion and ensures consistent results across all math problems. This concept underpins everything from basic arithmetic to advanced algebra, guaranteeing accurate calculations in daily life—like computing tax on multiple items or analyzing complex spreadsheet formulas.
If a+b = 10 and ab = 21, what is the value of (a-b)^2?
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View QuestionIf x^3 - 3x^2 + 4 = 0, what is one root of the equation?
View QuestionIf 2x - 3 = 7, what is the value of x?
View QuestionWhat is the square root of 0.25?
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View QuestionIf x = 2 and y = 3, what is the value of (x^2 + y^2)?
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