Solution 1 :
[tex](2x)(10x)[/tex]
[tex]\boxed{= 20x^{2}}[/tex]
Solution 2 :
[tex]-3m(m+8)[/tex]
[tex]\boxed{= -3m^{2} - 24m}[/tex]
Solution 3 :
[tex]4d(2d-9)[/tex]
[tex]\boxed{= 8d^{2} -36d}[/tex]
Solution 4 :
[tex](3x+4)(x-2)[/tex]
[tex]= 3x^{2} - 6x + 4x - 8[/tex]
[tex]\boxed{= 3x^{2} - 2x - 8}[/tex]
Solution 5 :
[tex](2y-1)(4y-3)[/tex]
[tex]= 8y^{2} -6y -4y + 3[/tex]
[tex]\boxed{= 8y^{2} -10y + 3}[/tex]
Note :
Remember this formulas :
[tex]a(b+c) = (a \times b)+(a \times c)[/tex]
[tex](a+b)(c+d)=(a \times c)+(a \times d)+(b \times c)+(b \times d)[/tex]
