factoring by grouping
factor 3x2-8x+5 using factoring by grouping
x(3x-5)-1(3x-5)
solve 0=x2+2x-3 for x
x=1 x=-3
x=1 x=-3
what is the sum of b and c in -2x2+5x+3=0
8
solve x2-5x+6 for x
x=2 x=3
what does GCF stand for?
greatest common factor
what is the b value in x2-4x+2x+5=0
-2
-2+-√16/2 if jimmy is solving this equation using quadratic formula, what is his next step?
you would square 16 to get 4 and split the equations into 2.
what is a coefficient?
The numeral value that multiplies a variable in a term or expression.
solve 2x2-8x+6 for x
x=1 x=3
What is the first step to factor by grouping?
Find two numbers that multiply to (a)(c) and add up to b.
solve 3x2-8x+5 for x
x=5/3 x=1
solve -2x2+5x+3=0 for x using quadratic formula
x=-0.5 x=3
what is the greatest common factor?
the largest number that divides two or more numbers evenly, without leaving a remainder.
solve x2+2x-8 for x
x=2 x=4
factor 6x2+19x+10 using factoring by grouping
(2x+5)(3x+2)
what is the second step for completing the square
divide by a to equal 1
what is this quadratic equations in standard form for 3x2-2x+6x=5
3x2+4x-5=0
what is a inverse operation?
an operation that undoes a operation
x2-9
x=3 x=-3
factor 5x2-30x+46 by using factoring by grouping
5(x-2)(x-4)
what do you add to both sides after identifying the b value?
(b/2)2
recite the quadratic formula in song
x equals negative b plus or minus the square root of b squared minus 4ac all over 2a
what is a binomial?
an algebraic expression with exactly two terms connected by either addition or subtraction.
solve x2-2x-3 for x
x=3 x=-1