What is 5(x^2+3)+3x^2-9 ?

The solution to 5(x^2+3)+3x^2-9 is 8x^2+6

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simplify 5(x^2+3)+3x^2-9

simplify

5 (x^{2} + 3) + 3 x^{2} - 9

8 x^{2} + 6

Solution steps

5 (x^{2} + 3) + 3 x^{2} - 9

Expand

5 (x^{2} + 3) : 5 x^{2} + 15

= 5 x^{2} + 15 + 3 x^{2} - 9

Group like terms

= 5 x^{2} + 3 x^{2} + 15 - 9

Add similar elements:

5 x^{2} + 3 x^{2} = 8 x^{2}

= 8 x^{2} + 15 - 9

Subtract the numbers:

15 - 9 = 6

= 8 x^{2} + 6

2^{l o g_{2} (\frac{1}{4})} a

\frac{( 3 x ^{2} - 4 x \cdot y ^{2} + y )}{( 9 x ^{2} - y ^{2} )}

\frac{( 2 x )}{( 4 x )}

\frac{( - 2 a ^{2} ) ^{3}}{b ^{3}}

\frac{( a + x ) ^{2} - 9}{( a + x ) + 3}