Question

solve question 1. expand (K+4)3​

Answer 1

$expand \: (k + 4) {}^{3}$

$(a + b) {}^{3} = a {}^{3} + b {}^{3} + 3a {}^{2} b + {3ab}^{2}$

$= {(k)}^{3} + (4) {}^{3} + 3 \times {(k)}^{2} \times (4) {}^{} + 3 \times (k) \times {(4)}^{2}$

$= {k}^{3} + 64 + 12 {k}^{2} + 48k$

Answer 2

Answer:

expand \: (k + 4) {}^{3}

(a + b) {}^{3} = a {}^{3} + b {}^{3} + 3a {}^{2} b + {3ab}^{2}

= {(k)}^{3} + (4) {}^{3} + 3 \times {(k)}^{2} \times (4) {}^{} + 3 \times (k) \times {(4)}^{2}

= {k}^{3} + 64 + 12 {k}^{2} + 48k