Simplfy the following
(x^2-9x+9)-(-2x+4)+(6x^2-7x-5)
solution:
x^2-0 -x+2+
thats as far as I got
(x^2-9x+9)-(-2x+4)+(6x^2-7x-5)
= (x^2+11x+5)+(6x^2-7x-5)
= 7x^2-4x
write 0.003191 in scientific notation
To simplify the given expression: (x^2-9x+9)-(-2x+4)+(6x^2-7x-5), we can follow a step-by-step approach:
Step 1: Remove the brackets and distribute the negative sign inside the second term: -(-2x+4) becomes +2x-4.
(x^2-9x+9)+ (2x-4) + (6x^2-7x-5)
Step 2: Combine like terms with the same exponent. Start from the term with the highest exponent, which in this case is 6x^2:
6x^2 + x^2 = 7x^2
The expression becomes:
7x^2 -9x + 9 + 2x - 4 -7x - 5
Step 3: Combine like terms with the same variable, x:
7x^2 + 2x - 7x -9x = 7x^2 - 14x
The expression becomes:
7x^2 -14x + 9 - 4 - 5
Step 4: Combine the constant terms:
9 - 4 - 5 = 0
The expression becomes:
7x^2 -14x + 0
Step 5: Simplify further, if possible:
The final simplified form is:
7x^2 - 14x