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Step-by-step Solution

Solve the inequality $x^2-16\geq 0$

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Answer

$x\leq 4$

Step-by-step explanation

Problem to solve:

$x^2-16\geq 0$
1

Grouping terms

$-x^2\geq -16$
2

Multiply both sides of the inequality by $-1$, reversing the sign

$x^2\leq 16$

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Answer

$x\leq 4$
$x^2-16\geq 0$

Main topic:

Inequalities

Time to solve it:

~ 0.76 seconds