Find the value of y for the given value of x.
y = 7x; x = – 5

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25