Math chapter 12,13 and 15.docx - Madushika Ranasinghe 12.3 Exercise Set 32 38 40 52 56 16 when x=0 x^2 3x-4(0)^2 3(0-4 0 0-4=-4 when x=-1-1)^2 3-1-4

# Math chapter 12,13 and 15.docx - Madushika Ranasinghe 12.3...

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Madushika Ranasinghe 12.3 Exercise Set - Questions 16, 18, 32, 38, 40, 52, 5616) when x=0x^2+3x-4(0)^2+3(0)-40+0-4= -4when x=-1(-1)^2+3(-1)-41+-3-4=-618)When x=0-2x^3+3x^2-6-2(0)^3+3(0)^2-60+0-6=-6When x=-1-2x^3+3x^2-6-2(-1)^3+3(-1)^2-62+3-6=-132)8x^2+4+11x^2-2019x^2-1638)7.6y+3.2y^2-8y-2.5y^2-0.4y+0.7y^240)2/5x^4-23x^2+1/15x^4+5x^2-57/15X^4-18x^2-552)-9xy+7y-xy-6y-10xy+y56)17a^2b-16ab^2+3a^3+4ba^3-b^2a17a^2b-17ab^2+3a^3+4ba^3
12.4 Exercise Set - Questions 4, 10, 24, 28, 54, 864)(3x-8)+(4x^2-3x+3)3x-8+4x^2-3x+34x^2+(3x-3x)+(-8+3)4x^2-510)(9.6y^3+2.7y^2-8.6)+(1.1y^3-8.8y+11.6)9.6y^3+2.7y^2-8.6+1.1y^3-8.8y+11.6(9.6y^3+1.1y^3)+2.7y^2-8.8y+310.7y^3+2.7y^2-8.8y+324)(-7x^2+4x+7)-(-8x+2)(-7x^2+4x+7)+(8x-2)-7x^2+4x+7+8x-2-7x^2+12x+528)(-0.3y^2+0.6y-0.3)-(0.5y^2+0.3)(-0.3y^2+0.6y-0.3)+(-0.5y^2-0.3)-0.8y^2-0.6y54)(x^2+7x+1)+(7x+5)-(4x^2-2x+2)x^2+7x+1+7x+5+4x^2+2x-2-3x^2+16x+486)Answer is 10x so it C12.5 Exercise Set - Questions 4, 24, 32, 34, 484)(-x^6)(-x)(-1 X-1) (x^6 X x)x^724) -4b^2(3b^3-12b^2-6)-4b^2(3b^3)+-4b^2(-12b^2)+-4b^2(-6)-12b^5+48b^4+24b^232)(x+2)(x+9)x(x+9)+2(x+9)x X x +x X9+2 X x+2 X 9x^2+9x+2x+18
x^2+11x+1834)(y-10)(y+11)y(y+11)-10(y+11)y^2+11y-10y-110y^2+y-11048)(a+2)(a^3-3a^2+7)