CONCEPT ON ALGEBRS FOR GRADE 8
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Answer:
Algebra is a division of mathematics designed to help solve certain types of problems quicker and easier. Algebra is based on the concept of unknown values called variables, unlike arithmetic which is based entirely on known number values.
Topics in algebra:
1.Graphing Systems of.
2.Linear Programming.
3.Absolute-Value Inequalities.
4.Factoring Quadratics.
5.Special Factoring Formulas.
6.Quadratic Formula.
7.Solving Quadratic Equations.
8.Graphing Quadratic Equations.
Algebra is divided into different sub-branches such as elementary algebra, advanced algebra, abstract algebra, linear algebra, and commutative algebra.
For example, 2(3 + 8) is a numeric expression. Algebraic expressions include at least one variable and at least one operation (addition, subtraction, multiplication, division). For example, 2(x + 8y) is an algebraic expression.
Rules for Algebra:
(a + b)2 = a2 + 2ab + b2
(a – b)2 = a2 – 2ab + b2
(a + b) (a – b) = a2 – b2
(x + a) (x + b) = x2 + (a + b)x + ab.
(x + a) (x – b) = x2 + (a – b)x – ab.
(x – a) (x + b) = x2 + (b – a)x – ab.
(x – a) (x – b) = x2 – (a + b)x + ab.
(a + b)3 = a3 + b3 + 3ab(a + b)
Answer:
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