# 23/24 EHE L47 Yr 10 - The quadratic equation

thomas.payne

Created on March 6, 2024

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## Transcript

#### 20

Lesson 47 - The Quadratic EQuation

1. What is the probability of rolling a prime number on a dice?2. How many lines of symmetry does a square have?3. A square has an area of 36cm2, what is the side length? 4. Simplify 20z2/45. What is the third square number - the fourth prime number?6. List the factors of 427. In a game, the chance of winning is 0.3 and drawing is 0.1. What is the chance of losing?8.What is 0.6 as a percentage?

Challenge

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Quizizz

##### But what happens when you can't factorise?

##### Some quadratic equations (got x2) can be solved by factorising. Like this one.

##### Solve x2 + 5x + 6 = 0

The quadratic equation

The quadratic formula

The quadratic formula

##### Write what A, B and C would be for each

##### 1) x2 + 14x + 24 = 02) x2 + 9x + 18 = 03) x2 -7x + 12 = 04) 2x2 -10x - 21 = 05) 3x2 - 4x + 2 = 06) x2 + 2 -4x = 07) 1 + 2x -4x2 = 08) 1/3 + 2x - 0.4x2 = 0

The quadratic formula

The quadratic formula

The quadratic formula

##### Solve:1) π₯2 - 2π₯ - 3 = 02) π₯2 - 6π₯ - 55 = 03) 2π₯2 + 4π₯ - 390 = 04) 5π₯2 - 50π₯ - 595 = 05) π₯2 - 7π₯ - 15 = 06) π₯2 + 13π₯ - 9 = 07) 2π₯2 - 34π₯ - 49 = 08) 3π₯2 - 34π₯ + 82 = 0

The quadratic formula

The quadratic formula

##### Solve:1) 2π₯2 + 4π₯ = 7 2) 7 = 13π₯ + 5π₯2 3) 22π₯2 = 6 + 15π₯

The quadratic formula

The quadratic formula

The quadratic formula

##### 2)

##### 3)

##### 1)

The quadratic formula

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

Simultanous equations

Past paper questions

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing