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algebra

English 11 Public

laws and expansion

Study Slideshow

expand

x^2+8x+16

15

expand

𝑡^2 – 10𝑡 +25.

15

expand

4𝑥^2+20𝑥+25

15

expand

25𝑐^2 – 30𝑐+9

15

expand

4𝑤^2 – 121

15

operate 𝑥+𝑥= ---.

2𝑥

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operate 𝑥×𝑥= ---.

x^2

15

remove brackets: – (a + b)

-a-b

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expand (a + b)(c + d)

ac+ad+bc+bd

15

Establish the first identity (𝑎+𝑏)^2 using areas.

Explanation

25

Establish the second identity (𝑎 – 𝑏)(𝑎+𝑏) using the distributive property.

𝑎^2+𝑎𝑏 – 𝑏𝑎 – 𝑏^2

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