Srry idk the ans for this que
Answer: When the quadratic equation can be factored or solved by completing the square, you do not need to use the quadratic formula
Step-by-step explanation: In the form ax² + bx + c
Whenever <em><u>a</u></em> is 1 (implied, no coefficient of x²) and the constant, <u><em>c</em></u>, is a multiple of numbers whose sum or difference is equal to <u><em>b</em></u>, factoring is much quicker and easier than using the quadratic formula.
Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.
Answer:
13x^2-4
Step-by-step explanation:
(5x^2-3)+(8x^2-1)=
5x^2+8x^2-3-1=
13x^2-4
Combine like terms (x's go with x's and y's go with y's) take the sign in from of the value and combine 8x+16x =24x and -9y+12y=3y (combine only works if the variables have the same exponent ( u can combine x and x(because they have an understood exponent of 1) but not x and x^3)
