Asked by Duran
Multiply:
(3a-(7/9))(3a-(7/9))
(3a-(7/9))(3a-(7/9))
Answers
Answered by
Reiny
you should memorize the pattern for squaring a binomial:
(a - b)^2 = a^2 - 2ab + b^2
so (3a - 7/9)^2
= 9a^2 - 42/9 a + 49/81
= 9a^2 - (14/3) a + 49/81
(a - b)^2 = a^2 - 2ab + b^2
so (3a - 7/9)^2
= 9a^2 - 42/9 a + 49/81
= 9a^2 - (14/3) a + 49/81
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