4x^ + 18x - 10 = 0
Please solve by factoring pleaseee
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Answer:
x=5/9
Step-by-step explanation:
di ko lang alam kung tama
correct me if im wrong
Verified answer
Answer:
x= 1/2 And. x= - 5
Step-by-step explanation:
4x²+18x-10=0 (Divide both sides by 2)
= 2x²+9x-5 =0. ( To solve this equation, factor the left hand side by grouping. First, left hand side needs to be rewritten as 2x²+ax+bx-5. To find a and b, set up a system to be solved.
= a+b=9
=. ab= 2(-5)= - 10
Since ab is negative, a and b have the opposite signs. Since a+b is positive, the positive number has greater absolute value than the negative. List all such integer pairs that give product - 10.
-1,10
-2,5
Calculate the sum for each pair.
-1+10=9 -2+5=3
The solution is the pair that gives sum 9.
a=-1 b=10
Rewrite 2x²+9x-5 as (2x²-x) + (10x-5)
= (2x²-x)+(10x-5)
Factor out x in the first and 5 in the second group.
x(2x-1) + 5(2x-1)
Factor out common term 2x-1 by using distributive property.
=(2x-1) (x+5)
To find equation solutions, solve 2x-1=0 and x+5=0.
The answers are:
x=1/2 and
x=-5
Hope this helps, it took me a while to type this.