8.2)2 – (1.8)2 factorise
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Answered by
1
(8.2)² – (1.8)²
use identity a² - b² = (a+b)(a-b)
(8.2 + 1.8)(8.2 – 1.8)
10 × 6.4
64
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Answered by
0
(8.2)² – (1.8)²
use identity a² - b² = (a+b)(a-b)
(8.2 + 1.8)(8.2 – 1.8)
10 × 6.4
64
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Answered by
0
(8.2)² – (1.8)²
use identity a² - b² = (a+b)(a-b)
(8.2 + 1.8)(8.2 – 1.8)
10 × 6.4
64
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
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