4x^2+35x+24=0

solve the equation please help me

Equation for the calculation double 2 and then add 5

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.