Step-by-step explanation:
4*-2 + 3*-3 = -8 - 9= -17
4*1 +3*-2= 4-6= -2
-2*-2 + 3*-3= 4-9= -5
-2*1 + 3*-2= -2 -6 = -8
-4*-2+6*-3=8-18= -10
-4*1+6*-2=-4-12= -16
the result matrix is
-17 -2
-5 -8
-10 -16
Using logarithmic laws: log(a) + log(b) = log(ab)
log₄ (x + 9) + log₄ (x + 21) = log₄ [(x + 9)(x + 21)] = 3
Since we want the equation in terms of x, the next intuitive step is take 4 to the power of both sides, because the left hand side will simplify easily.
Solving the quadratic we get:
BUT, for the logarithmic equation to be defined, x > -9, so x≠ -25
Thus, the only solution is x = -5.
Answer:
I believe the solution of the system of equations in (5,-7)
Step-by-step explanation: