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Big Idea: Solve quadratic equations Essential Question: How do you solve a quadratic equation by finding square roots?. Algebra 1 section 10.4. Use Square Roots to Solve Quadratic Equations. Solving Quadratic Equations by Taking Square Roots. Solving x 2 = d by Taking Square Roots

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algebra 1 section 10 4

Big Idea: Solve quadratic equations

Essential Question: How do you solve a quadratic equation by finding square roots?

Algebra 1section 10.4

Use Square Roots to Solve Quadratic Equations

solving quadratic equations by taking square roots
Solving Quadratic Equations by Taking Square Roots
  • Solving x2 = d by Taking Square Roots
    • If d > 0, then x2 = d has two solutions:
    • If d = 0, then x2 = d has one solution:
    • If d < 0, then x2 = d has no solution.
examples
Examples
  • Solve the following quadratic equations.

a) c)

b) d)

examples1
Examples
  • Solve the following quadratic equations.

a) b)

examples2
Examples
  • Solve the following quadratic equations.

a) c)

b) d)