How do you solve (3x plus 7)2?

Answer 1

To solve ((3x + 7)^2), you can use the formula for squaring a binomial, which is ((a + b)^2 = a^2 + 2ab + b^2). Here, (a = 3x) and (b = 7). Applying the formula gives:

[ (3x + 7)^2 = (3x)^2 + 2(3x)(7) + 7^2 = 9x^2 + 42x + 49. ]

So, ((3x + 7)^2 = 9x^2 + 42x + 49).