Question

factorise the following number: 343+64x³​

Answer 1

Answer:

$(4x + 7)(16 {x}^{2} + 28x + 49)$

Step-by-step explanation:

$343 + 64 {x}^{3} = {7}^{3} + {(4x)}^{3} = (7 + 4x)( {7}^{2} + 7 \times 4x + {(4x)}^{2} ) \\ =(4x + 7)(16 {x}^{2} + 28x + 49)$