Sum and difference of binomials (Decimal fractions) — task. Mathematics CBSE, Class 7.

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Find the sum and the difference of these binomials:

0.3 x^{2} + 0.02 y^{2}

and

0.15 x^{2} - 0.09 y^{2}

Choose the correct answer:

$\begin{array}{l} 0.38 x^{2} y^{2} \\ 0.26 x^{2} y^{2} \end{array}$
$\begin{array}{l} 0.45 x^{2} - 0.07 y^{2} \\ 0.15 x^{2} + 0.11 y^{2} \end{array}$
$none of them$
$\begin{array}{l} 0.32 x^{2} y^{2} + 0.06 x^{2} y^{2} \\ 0.32 x^{2} y^{2} - 0.06 x^{2} y^{2} \end{array}$
$\begin{array}{l} 0.45 x^{2} - 0.07 y^{2} \\ {0.15 x}^{2} - 0.07 y^{2} \end{array}$

Did you find an error?

12. Sum and difference of binomials (Decimal fractions)