The difference is StartFraction x squared + 3 x minus 12 Over (x + 3) (x minus 5) (x + 7) EndFraction.
<h3>What is a quadratic equation?</h3>
A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given expression is


by Taking LCM


Learn more about a quadratic equation;
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It is 1.5 times because $63 divided by $42 is $1.5.
Hope this helped!
You barrow form the next place which is the hundreds place. (See picture)