Year 10
Core
Year 10
Core
Solve a quadratic equation by factorising
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Lesson details
Key learning points
- In this lesson, we will learn how to solve a quadratic equation by factorising the expression to determine what values produce a zero multiplier.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
(a + 3)(a - 9)
(a + 3)(a + 3)
(a + 9)(a - 9)
Q2.
(a + 100)(a - 100)
(a + 25 )(a - 4)
(a + 50)(a - 50)
Q3.
(5 - a )(5 + a)
(5 + a)(5 - a )
(a + 5)( -a + 5)
3 Questions
Q1.
(a + 3)(a + 4)
a = -12
a = 3 and a = 4
Q2.
a = -3 and a = -4
a = -3 and a = 4
a = 3 and a = 4
Q3.
a = -18 and a = 2
a = -6
a = 12 and a = -3