81x2 + 72x + 16 = 81x2 + 36x + 36x + 16 = 9x(9x + 4) + 4(9x + 4) = (9x + 4)2
9X=4 gives x=4/9
4
9x-5x-2x = -4 2x = -4 x = -2
5.4 = (9x+4)/5 - 813.4 = (9x+4)/567 = 9x+463 = 9x7 = xYour answer is 7.
With suitable signs between the terms, yes.
if the x in "7x2" is variable x, then 7x(2)-5x=0 14x-5x=0 9x=0 x=0 if the x in "7x2" is a symbol for multiplication, then 7(2)-5x=0 14-5x=0 -5x= -14 5x=14 x= 14/5 x= 2 4/5 or, to factor it out... x(14-5)=0 x(9)=0 9x=0
7x2=14x7=21x7=28x7=35x7=42x7=49x7=56x7=63
Either: (7x + 4)(x + 4) = 7x2 + 32x + 16 or: (7x - 4)(x - 4) = 7x2 - 32x + 16
-9x + 4 = -50 -9x = -50 - 4 -9x = -54 -x = -6 x = 6.
9x + 4 = 6 9x = 6 -4 9x = 2 x = 2/9
(-9x^2/√x) + 4= [-9x^2/x^(1/2)] + 4= (-9x^2)[x^(-1/2)] + 4= -9x^[2 + (-1/2)] + 4= -9x^(2 - 1/2) + 4= -9x^(3/2) + 4= -9√x^3 + 4= -9√[(x^2)(x)] + 4= -9x√x + 4Or,(-9x^2/√x) + 4= [(-9x^2)(√x)/(√x)(√x)] + 4= [(-9x^2)(√x)/√x^2] + 4= [-9(x)(x)(√x)/x] + 4 simplify x= -9x√x + 4
9x - 5w = 4
102 +9x +4 = 9x + 106, which is in its simplest form.
81x2 + 72x + 16 = 81x2 + 36x + 36x + 16 = 9x(9x + 4) + 4(9x + 4) = (9x + 4)2
9X=4 gives x=4/9
(7x + 4)(x - 1)