You need to factor this function. Start with two sets of parenthesis, with x in both of them, for the x^2.
(x )(x ) To find what goes in these parenthesis, you must find two numbers that will add to give you -5 and mulitiply to give you -36.
-9 and 4: -9+4=-5 -9*4=-36 Add these values to your parenthesis, keep the signs.
(x-9)(x+4) Now set each set of parenthesis equal to 0 and solve.
x-9=0 x+4=0
x=9 x=-4
Your zeros are 9 and -4, which should be written in brackets.
You need to factor this function. Start with two sets of parenthesis, with x in both of them, for the x^2.
(x )(x ) To find what goes in these parenthesis, you must find two numbers that will add to give you -5 and mulitiply to give you -36.
-9 and 4: -9+4=-5 -9*4=-36 Add these values to your parenthesis, keep the signs.
(x-9)(x+4) Now set each set of parenthesis equal to 0 and solve.
x-9=0 x+4=0
x=9 x=-4
Your zeros are 9 and -4, which should be written in brackets.
