Question

expand
$(5a - 3b) { {}^{2} }^{}$
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Answer 1

$\large \purple {\tt {We~ know~ that~ the ~identity~ III~ is }}$ $\large \purple {\tt {{ (a-b)}^{2} = {a}^{2} + {b}^{2} - 2ab }}$

$\Large \pink {\tt {According~ to ~the~ question,}}$

$\Large \purple {\tt {\twoheadrightarrow {(5a-3b)}^{2}}}$

$\Large \pink {\tt {\twoheadrightarrow {(5a)}^{2} + {(3b)}^{2} - 2(5a)(3b) }}$

$\Large \purple {\tt {\twoheadrightarrow {25a}^{2} + {9b}^{2} - 30ab}}$

$\Huge \pink {\underline {\mathbb {ANSWER:}}}$

$\large \purple {\tt {{(5a - 3b)}^{2} = {25a}^{2} + {9b}^{2} - 30ab}}$

Answer 2

Answer is :

(5a)²-(2×5a×3b)+(3b)²

25a²-30ab+9b²

25a²-30ab+9b² is ur answer..