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kykrilka [37]
2 years ago
5

What are the solutions ?

0%2B%203x" id="TexFormula1" title="7x ^{2} + 10x - 3 = x ^{2} + 3x" alt="7x ^{2} + 10x - 3 = x ^{2} + 3x" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
anyanavicka [17]2 years ago
4 0

Answer:

x =  \frac{ - 3}{2}  \: or \:  \frac{1}{3}

Step-by-step explanation:

7 {x}^{2}  + 10x - 3 =  {x}^{2}  + 3x

=  > 7 {x}^{2} -  {x}^{2}   + 10x - 3x -3  = 0

=  > 6 {x}^{2}   +  7x - 3 = 0

= > 6 {x}^{2}  + 9x - 2x  - 3 = 0

=  > 3x(2x + 3) - 1(2x + 3) = 0

=  > (2x + 3)(3x - 1) = 0

Here x will have 2 values.

1) 2x + 3 = 0

=  > 2x =  - 3

=  > x =  \frac{ - 3}{2}

2)3x - 1 = 0

=  > 3x = 1

=  > x =  \frac{1}{3}

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