please please please please please plz answer this question
6 30.9×29.1
USING IDENTITY
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Answered by
1
Answer:
12+0.4×12-0.4=12^2-0.4^2
=143.84
30+0.9×30-0.9=30^2-0.9^2
=899.19
Answered by
0
Answer:
899.19
Step-by-step explanation:
30.9×29.1
= (30 + 0.9)×(30 - 0.9)
=(30)^2 - (0.9)^2
= 900 - 0.81
=899.19
please mark as brainliest....
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