The Quadratic Formula
The other
main approach to solving quadratic equations comes from the fact that x2
= k implies x = √k, –√k and a technique called completing the square. The solutions to ax2
+ bx + c = 0 are:
These
solutions are abbreviated as,
This formula
is called the quadratic formula. It will solve every quadratic equation. The
quadratic formula is very important in algebra and is worth memorizing. You
might wonder why we bother factoring quadratic expressions to solve quadratic
equations when the quadratic formula will work. There are two reasons. One,
factoring is an important skill in algebra and calculus. Two, factoring is
often easier and faster than computing the quadratic formula. The quadratic
formula is normally used to solve quadratic equations where the factoring is
difficult.
Before the formula can be used, the
quadratic equation must be in the form ax2 + bx + c = 0. Once a, b,
and c are identified, applying the quadratic formula is simply a matter of
performing arithmetic.
Practice
Identify a, b,
and c for ax2 + bx + c = 0.
Solutions
“Sumber
Informasi”
The Quadratic Formula
The Quadratic Formula
The other
main approach to solving quadratic equations comes from the fact that x2
= k implies x = √k, –√k and a technique called completing the square. The solutions to ax2
+ bx + c = 0 are:
These
solutions are abbreviated as,
This formula
is called the quadratic formula. It will solve every quadratic equation. The
quadratic formula is very important in algebra and is worth memorizing. You
might wonder why we bother factoring quadratic expressions to solve quadratic
equations when the quadratic formula will work. There are two reasons. One,
factoring is an important skill in algebra and calculus. Two, factoring is
often easier and faster than computing the quadratic formula. The quadratic
formula is normally used to solve quadratic equations where the factoring is
difficult.
Before the formula can be used, the
quadratic equation must be in the form ax2 + bx + c = 0. Once a, b,
and c are identified, applying the quadratic formula is simply a matter of
performing arithmetic.
Practice
Identify a, b,
and c for ax2 + bx + c = 0.
Solutions
“Sumber
Informasi”
Labels:
Mathematician
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