15. what is the simpler form of the expression? (3c^2+7)(3c^2-7) 16.whats the factored form of the expression ? d^2+5d+4 17.what is the factored form of the following expression? x^2+2xy-48y^2 18. what's the factored form of the expression? 56x^2+85x+24 19.what is the factored form of the expression 15x^2+28x+5 20.whats the factored form of the following expression? 6g^2+5g-6 21.whats the factored form of the expression 6x^2+1xy-15y^2 22.whats the factored form of the expression 168y^2-99y-42 23. find the radius of a circle with the area of 3.14 (9x^2+48x+64) 24.what is the factored form of expression 80x^2+120x+45 25. a dollhouse has a volume given by the trinomial y^3-5y^2-6y. what are the possible dimensions of the dollhouse ? using factoring . an that's all the questions i have.