For example, in the expression \(2b^2c\), where \(b = 4\) and \(c = 3\), use the values of \(b\) and \(c\) to calculate the numerical value of the expression: The ...
Learn how to solve systems of linear equations using the elimination method in this clear algebra tutorial with Brian McLogan. Compare elimination and substitution, see step-by-step algebraic ...
Substitution means putting numbers in place of letters to calculate the value of an expression. The bracket has been worked out first. \(2 + (-8)^2 = 2 + 64\). \(-8^2\) means \(-8 \times -8\), which ...