Solve by using quadratic zero product property. (7x+2)(5x-4)=0?

2 Answers
Jim G.
May 1, 2018

#x=-2/7" or "x=4/5#

Explanation:

#"given "axxb=0#

#"then "a=0" or "b=0" or "a" and "b=0#

#"using this property then equate each factor to zero"#
#"and solve for x"#

#7x+2=0rArrx=-2/7#

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

Daniel Tan
May 1, 2018

#x = -2/7# or #x = 4/5#

Explanation:

When you've factorized the E.Q.N and obtained #(7x+2)(5x-4)=0#

By applying the quadratic zero product property,
It means #(7x+2) = 0 or (5x-4)=0#

#=> 7x+2 = 0#

#:. x = -2/7#

#=> 5x-4 = 0#

#:. x = 4/5#

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