Assume you are adding 6 over d+5 to the radical expression 3d over d-4. What will the common denominator be written in terms of binomials? Use parenthesis. What will your answer be, expanded out and simplified? [blank] over [blank]

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

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c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.