Multiply: (5m+7n) x (7m-5n) (answer fast and tell the answer of my other question)
Answers
Answered by
1
Answer:
35m²+24mn-35n²
Step-by-step explanation:
(5m×7m)+(5m×(-5n))+(7n×7m)+(7n×(-5n))
35m²+(-25mn+49mn)+(-35n²)
35m²+24mn-35n²
Answered by
0
Answer:
24mn + 35m² - 35n²
Step-by-step explanation:
(5m + 7n) x (7m - 5n) =
5m (7m - 5n) + 7n (7m - 5n)
(multiplying the terms of the first bracket with the terms of the second bracket)
= 35m² - 25mn + 49mn - 35n²
The terms -25mn and 49mn have like variables.
= 49mn - 25mn + 35m² - 35n²
= 24mn + 35m² - 35n²
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