Question

(2a^+3b^)(2a^-5b^) ​

Answer 1

Step-by-step explanation:

$= 2a^{2}(2a^{2} - 5b^{2}) + 3b^{2}(2a^{2} - 5b^{2} )$

$= 4a^{2} - 10ab^{2} + 6ab ^{2} - 15b ^{2}$

$= 4a^{2} - 4ab^{2} - 15b^{2}$

Answer 2

Step-by-step explanation:

=2a

2

(2a

2

−5b

2

)+3b

2

(2a

2

−5b

2

)

= 4a^{2} - 10ab^{2} + 6ab ^{2} - 15b ^{2}=4a

2

−10ab

2

+6ab

2

−15b

2

= 4a^{2} - 4ab^{2} - 15b^{2}=4a

2

−4ab

2

−15b

2