а) y^2-3y+8y-24-4y*(5-2y)
y^2-3y+8y-24-20y+8y^2
9y^2-3y+8y-24-20y
9y^2-15y-24
б) m^2+8m+16-(m-7)*(m+7)
m^2+8m+16-(m^2-49)
m^2+8m+16-m^2+49
8m+16+49
8m+65
(^ - это степень)
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а) y^2-3y+8y-24-4y*(5-2y)
y^2-3y+8y-24-20y+8y^2
9y^2-3y+8y-24-20y
9y^2-15y-24
б) m^2+8m+16-(m-7)*(m+7)
m^2+8m+16-(m^2-49)
m^2+8m+16-m^2+49
8m+16+49
8m+65
(^ - это степень)