Question

Multiply1) (3x^2 + 5y^2) by (5x^2 - 3y^2)
2)(6x^2 - 5x + 3) by (3x^2 + 7x - 3)
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Answer 1

Answer:

1) $15x^{4}-15y^{4}+16x^{2}y^{2}$

2)$18x^{4}+27x^{3}-44x^{2}+36x-9$

Step-by-step explanation:

1)

$(3x^{2} +5y^{2}).(5x^{2} -3y^{2})$

$15x^{4}-9x^{2} y^{2}+25x^{2} y^{2}-15y^{2}$

$15x^{4}-15y^{4}+16x^{2}y^{2}$

2)

$(6x^{2} - 5x+3).(3x^{2} +7x-3)$

$18x^{4}+42x^{3}-18x^{2}-15x^{3}-35x^{2} +15x+9x^{2} +21x-9$

$18x^{4}+27x^{3}-44x^{2}+36x-9$