Question

(5) (3x + 4y)(3x + 5y)​

Answer 1

Answer:

${9x}^{2} + 5y \times 3x + 4y \times 3x + {20y }^{2} \\ {9x}^{2} + 15xy + 12xy + {20y}^{2} \\ {9x}^{2} + {20y}^{2} + 27xy$

Answer 2

Answer:

45x^2 +135xy + 100y^2

Step-by-step explanation:

(5)(3x + 4y)(3x+5y)

= (15x + 20y)(3x+5y)

= 15x(3x+5y)+20y(3x+5y)

= 45x^2 + 75xy + 60xy + 100y^2

= 45x^2+100y^2 + 135xy