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please give full explanation

1. (x-3) (x+2y)

2. (3h\10 - 4k) (3h\10 + 4k)

3. U^4 + u^2 y - 4u^2 - 4y

Step-by-step explanation:

1. factor the expression = x(x-3) +2y (x-3)

each time you place numbers in the parabola on the left you are supposed to put in on the right also.

2. First write in exponential form = 3^2 h^2\10h^2 - 4^2 k^2

then calculate the products = (3h)\10^2 - (4k)^2

And then raise the whole fraction to the power = (3h\10)^2 - (4k)^2

Final step factor the expression = (3h\10 - 4k) (3h\10 + 4k)

3. Step one simplify the product (use (a-b)(a+b )= a^2 - b^2 to simplify)= (u^2 - 4) (u^2 + y)

Final step remove the parentheses and multiply = u^4 + u^2 y - 4u^2 - 4y

I hope this help you understand what to do on your next assignment also

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)