MATH(quick Help please)
M+2M-4+7=42 M=13 failed Math
math
x^2+2xy+y^2+x+y-2=(x+y+2)(x+y-1) y=-x-2 y=-x+1
maths (trigonometry)
45&15
Calculus AB
(x^2+1)/(x^2-x)=(x^2-x+x+1)/(x^2-x)= =1+(x+1)/(x^2-x)=1+2/(x-1)-1/x
Calculus AB
x^3-x^2+x+3=(x+1)(x^2-2x+3) (x^2+5)/(x^3-x^2+x+3)= =A/(x+1)+(Bx+C)/(x^2-2x+3) A(x^2-2x+3)+(Bx+C)(x+1)=x^2+5 A+B=1 -2A+B+C=0 3A+C=5 Find A,B,C
Maths
Let f(x)=x^3-x^2-8x=x(x^2-x-8). f(x) has 3 real roots. f'(x)=3x^2-2x-8=(3x+4)(x-2) maxf(x)=f(-4/3)=-64/27-16/9+32/3=176/27 minf(x)=f(2)=8-4-16=-12 -176/27<k<12
college algebra
(7h+j)(6h-5j)
arithmetic
If a:b:c=2:1:3 then a=2b, c=3b If 2a-3b+c=8 then 4b-3b+3b=8, b=2
TRIGO
Let z=tan^2(x), z>0 F(z)=9z+4/z, F'(z)=9-4/z^2, F'(z)=0 if z=2/3 minF(z)=F(2/3)=12 (corresponding value of x exists)
Pre calc
Do you know how to solve equation a*sinx+b*cosx=c ?
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