Algebra Examples

$x^{2} - 1.78 x$ ; if $x = 2.78$

Step 1

Replace the variable $x$ with $2.78$ in the expression.

${(2.78)}^{2} - 1.78 \cdot 2.78$

Step 2

Simplify each term.

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Step 2.1

Raise $2.78$ to the power of $2$ .

$7.7284 - 1.78 \cdot 2.78$

Step 2.2

Multiply $- 1.78$ by $2.78$ .

$7.7284 - 4.9484$

Step 3

Subtract $4.9484$ from $7.7284$ .

$2.78$