Answer:
thanks
Step-by-step explanation:
Answer:
Step-by-step explanation:
= x^2+6x+9-8=0
=x^2+6x+1=0
D=b^2-4ac
D= 36-4
D=32
x=-b±root D/2a
x=-6+4root2/2 , x = -6-4root2/2
simplify you get the least form...
hope it helps
Answer:
9/10x3 1/3 =3 or 10/3x9/10 =3
Step-by-step explanation:
Answer:
x=1 and y=5
Step-by-step explanation:
simultaneous equations: substitution method
2x+4y=22----equation 1
7x+y=12---equation 2
from equation 2 make y the subject
y=12-7x----equation 3
substitute y into equation 1 to find x
2x+4(12-7x)=22
2x+48-28x=22
collect like terms
2x-28x=22-48
-26x=-26
divide by -26
-26x/-26=-26/-26
x=1
substitute x=1 into equation 3
y=12-7(1)
y=12-7
y=5
therefore, x=1 and y=5
Answer:
Option A. 8x² - 25x + 7.
Step-by-step explanation:
The given polynomials are
A = 3x -4
B = x + 7
C = x² + 2
Now we have to find the simplest form of A² - (B + C)
A² = (3x - 4)² = 9x² + 16 -24 x
B + C = x + 7 + x² + 2 = x² + x + 9
Now A² - (B + C) = 9x² + 16 -24x -(x² + x + 9)
= 9x² -24x + 16 - x²- x - 9
= 8x² -25x + 7
Therefore Option A. 8x² - 25x + 7 is the answer.