How do you find the zeroes of #f( x ) = 5( 2x - 5) ( 5x + 4)#?

1 Answer
Jim G.
Jul 25, 2017

#x=-4/5" and "x=5/2#

Explanation:

#"the zeros are the values of x that make f(x) equal zero"#

#"to find them set " f(x) = 0#

#rArr5(2x-5)(5x+4)=0#

#"set each factor to zero and solve for x"#

#2x-5=0rArrx=5/2#

#5x+4=0rArrx=-4/5#

#rArr"the zeros are "x=-4/5" and "x=5/2#

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