Question Simplify the expression n2−122 Evaluate n2−4−12×9−10Multiply the numbers n2−4−108−10Solution n2−122 Show Solution Find the roots n1=−122,n2=122Alternative Form n1≈−11.045361,n2≈11.045361 Evaluate n2−4−12×9−10To find the roots of the expression,set the expression equal to 0 n2−4−12×9−10=0Multiply the numbers n2−4−108−10=0Subtract the numbers n2−112−10=0Subtract the numbers n2−122=0Move the constant to the right-hand side and change its sign n2=0+122Removing 0 doesn't change the value,so remove it from the expression n2=122Take the root of both sides of the equation and remember to use both positive and negative roots n=±122Separate the equation into 2 possible cases n=122n=−122Solution n1=−122,n2=122Alternative Form n1≈−11.045361,n2≈11.045361 Show Solution
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